Ch.2 - Atoms & ElementsSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds
Jules Bruno

The Periodic Table is a listing of the elements in order of increasing atomic number and atomic mass. Its organization relates different elements by their chemical compositions and properties. 



Major Classification Types of the Period Table

The three major classifications in the periodic table include metals, non-metals and metalloids. 

Major-Element-ClassificationsMajor Element Classifications

Metals – comprise a majority of the elements on the periodic table. 

They are characterized as having luster (shininess), being good thermal and electrical conductors, being malleable and opaque, while having ductility and being solids at room temperature. 

Free Electrons on Metal Surfaces

Non-Metals – constitute the second largest classification for elements of the periodic table. 

They are characterized as having little to no luster (shininess), being poor thermal and electrical conductors, being brittle and transparent, while having no ductility and representing all phases at room temperature. 

Three-Phases-MatterThree Phases of Matter

Metalloids – constitute the smallest classification for elements on the periodic table. 

They share some of the characteristics of both metals and non-metals. Because of this hybrid classification they are sometimes called “semi-metals” or “semi-conductors.”

Group Classifications of the Period Table

Beyond the major classifications of the elements we can further divide them into groups or families

The Main Groups 1 - 8 or Group A Elements are the Alkali Metals, Alkaline Earth Metals or Rare Earth Metals, Pnictogens, Chalcogens, Halogens, Noble Gases or Inert Noble Gases. 

The remaining elements or Group B Elements are the Transition Metals and Inner Transition Metals, of which are further divided into Lanthanides and Actinides.   

Groups-of-the-Periodic-TableGroups of the Periodic Table

Elements, Symbols, & Beyond

From constant exposure to the elements of the periodic table you will find yourself memorizing 20 elements then 30 elements to 50 elements and beyond. 

Once you’ve memorized the periods, groups, and names of elements you will take a look at the orbital structure of elements when discussing isotopes, and the subatomic particles of protons, neutrons and electrons

Eventually you will begin doing calculations involving the elements’ moles and mass, their periodic trends (electronegativity, van der Waals forces, electron shells), their charges, and electron configurations (valence electrons, ground state, excited state). 


Jules Bruno

Jules felt a void in his life after his English degree from Duke, so he started tutoring in 2007 and got a B.S. in Chemistry from FIU. He’s exceptionally skilled at making concepts dead simple and helping students in covalent bonds of knowledge.


Additional Problems
List the monatomic ions that the elements below are expected to form when they are incorporated into an ionic compound (give the symbol and the charge).             A)  sulfur         ____________ B)  lithium       ____________ C)  barium       ____________ D)  chlorine     ____________
What is the name of the elements in Group 2A of the periodic table? A. Transition metals B. Alkali earth metals C. Alkali metals D. Halogens
Which of the following elements does NOT have a symbol taken from a LATIN name? (A) iron (B) copper (C) sodium (D) potassium (E) phosphorus
Which of the following is true? A) Copper (Cu) is a main group element. B) Tellurium (Te) is a transition metal. C) Germanium (Ge) is a metalloid. D) Halogens are unreactive.
If aluminum and sulfur formed ions, what would be their charges, respectively? A) 2+, 2- B) 3-, 1- C) 3+, 2-  D) 1+, 1-
A food that has substantial amounts of compounds that have sulfur in them is: a. broccoli b. blueberries c. spinach d. cereal e. garlic
Which of the following might form a  -2 anion? a. Na b. Se c. Mg d. Si e. P
Which of the following elements are all metalloids?   a. Si, Ge, Po b. Al, Si, P c.P, As, Sb d. Sn, Sb, Te e. Al, Ga, In
What type of ions would be formed by potassium, aluminum and oxygen atoms, respectively? (A) P+, Al3+, O2- (B) K+, Al3+, O2- (C) K+, Al+, O6+ (D) K+, Al5-, O2- (E) K-, Al3-, O2+
Which is the chemical symbol for silicon?   a. S b. Si c. Sn d. Se e. None of the given answers.
The element with the symbol Y was named after a village in Sweden that has a quarry which has yielded many unusual metals. That is the name of this element?   a. Ytterbium b. Yakim c. Yttrium d. Yahbini e. Yardley
Ions differ in the number of A) electrons. B) neutrons. C) protons. D) neutrons and protons. E) electrons and protons.
What is the name of the element that has the symbol Ge? a. Gellium b. Gelfur c. Germanium d.Geraldium e. Georgium
Which of the following does NOT describe a metal? A) good conductor of heat B) good conductor of electricity C) tends to gain electrons D) forms ionic compounds with nonmetals E) found on the left side of the periodic table.
Which of the following elements is NOT correctly matched with its symbol? (A) sodium is Na (B) phosphorus is P (C) chlorine is Cl (D) carbon is C (E) neon is N
Identify the group or family to which each of the following elements belongs by placing the letter corresponding to the group in the blank to the left of the element.             _____ potassium                              A.  Halogen             _____ fluorine                                   B.  Transition metal             _____ magnesium                            C.  Alkali metal             _____ nickel                                      D.  Alkaline earth metal
Which of the following statements is/are correct? i. Au, Pb and Na are the symbols for gold, lead and sodium ii. K, S and Mn are the symbols for potassium, sulfur and magnesium iii. W, Ag and Ti are the symbols for tungsten, silver and titanium a. ii only b. iii only c. i and ii d. i and iii e. ii and iii
Which atom is most likely to form only a 2+ ion? a. iron b. barium c. aluminum d. copper e. fluorine  
Which of the following is a metal? a. Rb b. At c. Sb d. Ge e. Si
Which ions should be formed by magnesium, nitrogen, and chlorine, respectively? (A) Mg2+, N3-, Cl- (B) Mn7+, N3-, C4+ (C) Mg2+, N5+, Cl- (D) Mg+, N5+, C4+ (E) Mg+, N3-, Cl-
Predict the charge of the ion formed by each element.  a. Mg b. N c. F d. Na 
All the following elements exist as diatomic gases at room temperature and atmospheric pressure except H Cl N Ar O
Write the symbol for each element and classify it as a metal, nonmetal or metalloid. a. gold b. fluorine c. sodium d. tin e. argon
Which one of the following does not occur as diatomic molecules in elemental form? A) flourine B) nitrogen C) selenium D) hydrogen E) oxygen
Which of the following is a molecular element? A) Mg B) Ar C) Xe D) I E) Li
Which of the following statements is NOT true? A. Bromine is a diatomic element B. Antimony is a metalloid C. Scandium is an alkaline earth metal D. Neodynium is an inner transition metal
Which diagram(s) best characterize(s) an element? 1. I only 2. III and IV only 3. II only  4. I and II only
Which statement best reflects the organization of the modern periodic table? a) Elements are always arranged in order of increasing atomic weights. b) Metallic properties increase going from bottom to top in a family of elements. c) Nonmetallic properties tend to predominate for elements at the far right portion of the table. d) Each transition element is placed in the column of the main group element that it most closely resembles.
Match the following. i) oxygen ii) chlorine iii) neon iv) calcium v) iodine A) Ca(s)     B) Cl 2(g)     C) Cl(g)     D) Ne(g)     E) O(g)     F) Ca2(g)     G) Ne2(g)     H) O2(g)     I) I (g)     J) I 2(s)  
Which of the following characteristics are true of nonmetals?             I. good thermal and electrical conductors II. good thermal and electrical insulators III. readily lose electrons IV. readily gain electrons
The names of the elements whose symbols are Si, P, Mn, and S are, respectively, a. silicon, potassium, manganese, and sulfur. b. silver, phosphorus, magnesium, and sodium. c. silicon, potassium, magnesium, and sulfur. d. silver, potassium, manganese, and sodium. e. silicon, phosphorus, manganese, and sulfur.
Beryllium is an ____ and silver is a ____. A. alkaline earth metal; halogen B. alkali metal; nonmetal C. alkali metal; halogen D. alkali metal; transition metal E. alkaline earth metal; transition metal
Which of the following is not a correct name, symbol combination? a. calcium, Ca b. sodium, Na c. mercury, Hg d. uranium, U e. fluorine, FL
Write the formula and the phase for the following elements. a) Chlorine     b) Argon     c) Bromine     d) Zinc     
Classify each of the following elements into one or more of the given categories: A. Alkali Metal     B. Alkaline Earth Metal     C. Pnictogen     D. Chalcogen     E. Halogen     F. Noble Gas     G. Transition Metal     H. Inner Transition Metal     I. Representative Element     J. Lanthanide     K. Actinide 1) Br   2) Ca   3) H   4) No   5) Mn   6) P
Elements in the same group of the periodic table typically have_______. a. similar mass numbers b. similar physical properties only c. similar chemical properties only d. similar atomic masses. e. similar physical and chemical properties.
Which one of the following is an unreactive nonmetal? a. xenon b. nitrogen c. calcium d. zinc e. bromine
Identify the element from the given information. a) Alkaline earth metal in the 3rd period: ____________ b) Transition metal in the 5th period that has similar chemical properties to chromium: ____________ c) Metalloid that is a chalogen: ____________ d) Inner transition metal in the 6th period that has the greatest atomic mass: ____________ e) Representative element that is not diatomic in the 3rd period that assumes the shape and volume of the container that it is in: ____________ f) Halogen that has the smallest atomic number: ____________
How many of these elements are nonmetals?         Na         Cl         C         Fe         Rb         O         F         Au         P   a. 1 b. 2 c. 3 d. 4 e. 5
From what you know about ion formation and the periodic table, which ion would be unlikely to occur? a. Rb + b. Ca 2+ c. Al 3+ d. Na 2+ e. All of these ions are common ions.
Using the periodic table below, which of the following statements is   INCORRECT?
In reactions to form ionic compounds, metals generally 1. lose electrons. 2. become non-metals. 3. do not react. 4. gain electrons
Which pair of elements do you expect to be most similar?  Why? a) N, O           b) Ti, Ga                c) Li, Na     d) Ge, As       e) Ar, Br
Which of the following elements is an alkaline earth metal? a. Cs b. Cu c. Mg d. Ti e. Br
Which of the following does NOT describe a metal? A) Found on the left side of the periodic table. B) Good conductor of heat. C) Form ionic compounds with nonmetals. D) Good conductor of electricity. E) Tend to gain electrons.
A homonuclear diatomic molecule is a molecule composed of three atoms of the same element. 1) True 2) False
What is the common ion formed by nitrogen. 
Identify the group or family to which each of the following elements belongs by placing the letter corresponding to the group in the blank to the left of the element.   _____ potassium                              A.  Halogen  _____ fluorine                                  B.  Transition metal  _____ magnesium                           C.  Alkali metal  _____ nickel                                     D.  Alkaline earth metal
Classify each of the following elements as atomic or molecular.neon
Classify each of the following elements as atomic or molecular.fluorine
Classify each of the following elements as atomic or molecular.potassium
Classify each of the following elements as atomic or molecular.nitrogen
Identify the three elements indicated on the periodic table.
Give the group that they are in.
In the periodic table, what are the rows called and what are the columns called?
Four of the boxes in the following periodic table are colored.Which one is an alkaline earth metal?        
Without looking at a periodic table, list five alkali metals and five alkaline earth metals.
Four of the boxes in the following periodic table are colored.Which one is a noble gas?
For each of the following elements, write its chemical symbol:For each of the following elements, determine the name of the group to which it belongs (the table). Group Elements Alkali metals Li, Na, K, Rb, Cs, Fr Alkaline earth metals Be, Mg, Ca, Sr, Ba, Ra Chalcogens O, S, Se, Te, Po Halogens F, Cl, Br, I, At Noble gases (or rare gases) He, Ne, Ar, Kr, Xe, Rn
Where in the periodic table are the main-group elements and the transition metal groups found?
Without looking at a periodic table, list four common halogens.
Without looking at a periodic table, list six common noble gases.
What are the characteristic properties of each of the following groups: noble gases, alkali metals, alkaline earth metals, halogens?
The radioactive element indicated on the following periodic table is used in smoke detectors. The black bar shown in rows six and seven indicate that the series below starts with the fourth element of each row respectively.Tell what kind of group its in.
Determine whether or not each element is a main-group element.tellurium
Determine whether or not each element is a main-group element.potassium
Determine whether or not each element is a main-group element.vanadium
Determine whether or not each element is a main-group element.manganese
How many groups are there in the periodic table?
Classify these elements as metals, nonmetals, or semimetals.
Name two ways in which the metals shown above differ in general appearance from the nonmetals.
For each of the following elements, write its chemical symbol:For each of the following elements, locate it in the periodic table, and indicate whether it is a metal, metalloid, or nonmetal.
Identify the following elements as metals, nonmetals, or semimetals.Ti
Identify the following elements as metals, nonmetals, or semimetals.Te
Identify the following elements as metals, nonmetals, or semimetals.Se
Identify the following elements as metals, nonmetals, or semimetals.Sc
Identify the following elements as metals, nonmetals, or semimetals.At
Four of the boxes in the following periodic table are colored.Which of these are metals and which are nonmetals?
Identify the following elements as metals, nonmetals, or semimetals.Rb
Arranging elements by atomic number reveals a periodic pattern of properties. This pattern is the basis of the periodic table.If F is a reactive nonmetal, which other element or elements shown here do you expect to also be a reactive nonmetal?
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Locate each of the following elements in the periodic table and indicate whether it is a metal, metalloid, or nonmetal.
The elements of group 4A show an interesting change in properties moving down the group.Label each element in the group as a nonmetal, metalloid, or metal.
Where on the following outline of a periodic table does the dividing line between metals and nonmetals fall?
Where in the periodic table are the metallic and nonmetallic elements found?
What is a semimetal?
Where in the periodic table are semimetals found?
An element is indicated in the periodic table. Classify it as a metal, nonmetal, or semimetal.
Classify the following elements as metals, nonmetals, or semimetals:Ar
Classify the following elements as metals, nonmetals, or semimetals:Sb
Classify the following elements as metals, nonmetals, or semimetals:Mo
Classify the following elements as metals, nonmetals, or semimetals:Cl
Classify the following elements as metals, nonmetals, or semimetals:N
Classify the following elements as metals, nonmetals, or semimetals:Mg
You may want to reference  (Enter Link Code(Pages 61 - 64) )  Section 2.7 while completing this problem. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the charge on the ion associated with the orange box, labeled "A."
You may want to reference  (Enter Link Code(Pages 61 - 64) )  Section 2.7 while completing this problem. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the charge on the ion associated with the blue box, labeled "B."
You may want to reference  (Enter Link Code(Pages 61 - 64) )  Section 2.7 while completing this problem. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the charge on the ion associated with the black box, labeled "C."
You may want to reference  (Enter Link Code(Pages 61 - 64) )  Section 2.7 while completing this problem. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the charge on the ion associated with the red box, labeled "D."
You may want to reference  (Enter Link Code(Pages 61 - 64) )  Section 2.7 while completing this problem. Five of the boxes in the following periodic table are colored. Predict the charge on the ion associated with each of these elements.Predict the charge on the ion associated with the green box, labeled "E."
You may want to reference Section 2.7 (Pages 61 - 64) while completing this problem.Does the drawing represent a neutral atom or an ion?
You may want to reference (Page 64) Section 2.7 while completing this problem.What is the charge of the ion most commonly formed by S?
Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the most stable ion of Mg.
Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the most stable ion of Al.
Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the most stable ion of K.
Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the most stable ion of S.
Each of the following elements is capable of forming an ion in chemical reactions.By referring to the periodic table, predict the charge of the most stable ion of F.
You may want to reference (Pages 61 - 64) Section 2.7 while completing this problem. Using the periodic table, predict the charges of the ions of the following elements. Sr 
You may want to reference (Pages 61 - 64) Section 2.7 while completing this problem. Using the periodic table, predict the charges of the ions of the following elements. As 
You may want to reference (Pages 61 - 64) Section 2.7 while completing this problem. Using the periodic table, predict the charges of the ions of the following elements. Br 
You may want to reference (Pages 61 - 64) Section 2.7 while completing this problem. Using the periodic table, predict the charges of the ions of the following elements. Ga 
You may want to reference (Pages 61 - 64) Section 2.7 while completing this problem. Using the periodic table, predict the charges of the ions of the following elements. Se 
You may want to reference (Pages 56 - 61) Section 2.6 while completing this problem. Predict the charge of the ion formed by each of the following elements.N
You may want to reference (Pages 56 - 61) Section 2.6 while completing this problem. Predict the charge of the ion formed by each of the following elements.F
You may want to reference (Pages 56 - 61) Section 2.6 while completing this problem. Predict the charge of the ion formed by each of the following elements.Na
How do you predict the charges of ions formed by main-group elements?
Predict the charge of the ion formed by each of the following elements.O
Predict the charge of the ion formed by each of the following elements.K
Predict the charge of the ion formed by each of the following elements.Al
Predict the charge of the ion formed by each of the following elements.Rb
What are the symbols for the following elements? You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Gadolinium (used in color TV screens)
What are the symbols for the following elements? You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Germanium (used in semiconductors)
What are the symbols for the following elements? You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Technetium (used in biomedical imaging)
What are the symbols for the following elements? You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Arsenic (used in pesticides)
What are the symbols for the following elements?Cadmium (used in rechargeable Ni-Cd batteries)
What are the symbols for the following elements?Strontium (used to produce a red color in fireworks)
What are the symbols for the following elements?Beryllium (used in the space shuttle)
What are the symbols for the following elements?Zirconium (nanotechnology applications)
Give the names corresponding to the following symbols. You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.W
Give the names corresponding to the following symbols. You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Re
Give the names corresponding to the following symbols. You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Be
Give the names corresponding to the following symbols. You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.Os
For each of the following elements, write its chemical symbol:chromium
Give the names corresponding to the following symbols. You may want to reference (Pages 38 - 41) Section 2.3 while completing this problem.K
For each of the following elements, write its chemical symbol:helium
Give the names corresponding to the following symbols. B
For each of the following elements, write its chemical symbol:phosphorus
Give the names corresponding to the following symbols. Rn
For each of the following elements, write its chemical symbol:zinc
Give the names corresponding to the following symbols.Cf
For each of the following elements, write its chemical symbol:magnesium
Give the names corresponding to the following symbols.Xe
For each of the following elements, write its chemical symbol:bromine
Give the names corresponding to the following symbols.Fe
For each of the following elements, write its chemical symbol:arsenic
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Ca
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Ti
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Ga
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Th
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Pt
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Se
Locate each of the following elements in the periodic table and give the name of the element. You may want to reference(Pages 55 - 58)Section 2.5 while completing this problem.Kr
Group Name Elements 1A Alkali metals Li, Na, K, Rb, Cs, Fr 2A Alkaline earth metals Be, Mg, Ca, Sr, Ba, Ra 6A Chalcogens O, S, Se, Te, Po 7A Halogens F, Cl, Br, I, At 8A Noble gases (or rare gases) He, Ne, Ar, Kr, Xe, Rn Names of Some Groups in the Periodic TableChlorine is a halogen. Locate this element in the periodic table. What is its symbol?
For each of the following elements, write its chemical symbol:potassium
For each of the following elements, write its chemical symbol:iodine
For each of the following elements, write its chemical symbol:magnesium
For each of the following elements, write its chemical symbol:argon
For each of the following elements, write its chemical symbol:sulfur
The elements of group 4A show an interesting change in properties moving down the group.Give the name of each element in the group.
The elements of group 4A show an interesting change in properties moving down the group.Give chemical symbol of each element in the group.
In which of the periodic groups 1A, 2A, 5A, and 7A do all elements have the first letter of their symbol the same as the first letter of their name?
What are the characteristic properties of metals, nonmetals, and metalloids?
You may want to reference (Pages 56 - 60) Section 2.6 and (Pages 62 - 64)Section 2.7 while completing this problem.Type the symbol for the element lead.
You may want to reference (Pages 56 - 60) Section 2.6 and (Pages 62 - 64)Section 2.7 while completing this problem.Type the symbol for the element iodine.
You may want to reference (Pages 56 - 60) Section 2.6 and (Pages 62 - 64)Section 2.7 while completing this problem.Type the symbol for the element potassium.
You may want to reference (Pages 56 - 60) Section 2.6 and (Pages 62 - 64)Section 2.7 while completing this problem.Type the symbol for the element silver.
You may want to reference (Pages 56 - 60) Section 2.6 and (Pages 62 - 64)Section 2.7 while completing this problem.Type the symbol for the element xenon.
What defines an element?
Where do elements get their names?
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.carbon
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.nitrogen
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.titanium
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.zinc
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.iron
An element is a shiny, silver-colored solid at room temperature and pressure. It conducts electricity and can be found in nature in its pure form. Classify the element as a metal, nonmetal, or semimetal.
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.P
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.Ca
An element is indicated in the periodic table. Give the symbol of the element.
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.He
An element is indicated in the periodic table. Predict the appearance of the element at room temperature and pressure.
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.Pb
An element is indicated in the periodic table. What would happen if you were to hit a pure sample of this element with a hammer?
You may want to reference (Pages 7 - 11) Sections 1.2 and 1.3 while completing this problem. Give the chemical symbol or name for each of the following elements, as appropriate.Ag
An element is indicated in the periodic table. Could this element be used to make a wire to conduct electricity in your home?
An element is indicated in the periodic table. Give the name of the element.
The radioactive element indicated on the following periodic table is used in smoke detectors. The black bar shown in rows six and seven indicate that the series below starts with the fourth element of each row respectively.Identify the element highlighted in purple in the periodic table shown.
The radioactive element indicated on the following periodic table is used in smoke detectors. The black bar shown in rows six and seven indicate that the series below starts with the fourth element of each row respectively.Give its atomic number.
Write the name of the element Na.
Write the name of the element Mg.
Write the name of the element Br.
Write the name of the element N.
Write the name of the element As.
How many elements are presently known?
What is the second most abundant element in the human body?
The first atoms of seaborgium (Sg) were identified in 1974. The longest-lived isotope of Sg has a mass number of 266.Atoms of Sg are very unstable, and it is therefore difficult to study this elements properties. Based on the position of Sg in the periodic table, what element should it most closely resemble in its chemical properties?
Are the following statements true or false?The symbol for tin is Ti.
What is the second most abundant element in the Earths crust?
Are the following statements true or false?The symbol for manganese is Mg.
Which of the following pairs of elements do you expect to be most similar?nitrogen and oxygen
Are the following statements true or false?The symbol for potassium is Po.
Are the following statements true or false?The symbol for helium is He.
Are the following statements true or false?The symbol for carbon is Ca.
Are the following statements true or false?The symbol for sodium is So.
At room temperature, a certain element is yellow crystalline solid. It does not conduct electricity, and when hit with a hammer it shatters. Is the element likely to be a metal, a nonmetal, or a semimetal?
Are the following statements true or false?The symbol for nitrogen is Ni.
Which of the following pairs of elements do you expect to be most similar?titanium and gallium
At room temperature, a certain element is a colorless, unreactive gas. Is the element likely to be a metal, a nonmetal, or a semimetal?
Are the following statements true or false?The symbol for chlorine is Cr.
Which of the following pairs of elements do you expect to be most similar?lithium and sodium
Which of the following pairs of elements do you expect to be most similar?germanium and arsenic
Which of the following pairs of elements do you expect to be most similar?argon and bromine
At room temperature, a certain element is found to be a soft, silver-colored solid that reacts violently with water and is a good conductor of electricity.Is the element likely to be a metal, a nonmetal, or a semimetal?
At room temperature, a certain element is found to be shiny, silver-colored solid that is a poor conductor of electricity. When a sample of the element is hit with a hammer, it shatters.Is the element likely to be a metal, a nonmetal, or a semimetal?
For which elements in groups 1A, 2A, 5A, and 7A of the periodic table does the first letter of their symbol differ from the first letter of their name?
Fill in the gaps in the following table: Symbol Co3+ Protons 34 76 80 Neutrons 46 116 120 Electrons 36 78 Mass number 59 Net charge 2+ Complete the sixth raw of the table.
Metals and nonmetals can react with each other to form ions. Complete these statements.A potassium atom gains or loses (electrons/protons/neutrons) and forms how many ion?A sulfur atom gains or loses (electrons/protons/neutrons) and forms how many ion?
Which of the following elements is a  metalloid?  a) Ar b) As c) Be d) Cr e) Pb
Which of the following is an atomic element? A) calcium      B) chlorine      C) oxygen       D) hydrogen    E) nitrogen 
When the elements barium and phosphorus form ions, what are their charges, respectively? A) 2+, 3- B) 3+, 2- C) 3+, 3- D) 1+, 1-
Which of the following is an atomic element? A) Br B) Mg C) O D) H E) N
Which of the following shows a metal, nonmetal, and metalloid, respectively? A) Sc, B, Si B) Al, H, Si C) As, Ge, Ga D) Zr, Ar, Pb
For each of the following atomic numbers, use the periodic table to write the formula (including the charge) for the simple ion that the element is most likely to form in ionic compounds.a. 13
For the following element, write its chemical symbol, determine the name of the group to which it belongs , and indicate whether it is a metal, metalloid, or nonmetal: (a) potassium
For the following element, write its chemical symbol, determine the name of the group to which it belongs , and indicate whether it is a metal, metalloid, or nonmetal: (b) iodine
Lithium belongs to the _______ group of the periodic table. a) halogen b) alkaline earth metal c) noble gas d) alkali metal
For the following element, write its chemical symbol, determine the name of the group to which it belongs , and indicate whether it is a metal, metalloid, or nonmetal: (c) magnesium
For the following element, write its chemical symbol, determine the name of the group to which it belongs , and indicate whether it is a metal, metalloid, or nonmetal: (d) argon
For the following element, write its chemical symbol, determine the name of the group to which it belongs , and indicate whether it is a metal, metalloid, or nonmetal: (e) sulfur
Classify each element as atomic or molecular. a) neonb) fluorinec) potassiumd) nitrogen
The elements of group 4A show an interesting change in properties moving down the group. Give the name and chemical symbol of each element in the group and label it as a nonmetal, metalloid, or metal.
Determine whether or not each element has molecules as its basic units. a) hydrogenb) iodinec) leadd) oxygen
Which elements do you expect to lose electrons in their chemical reactions? Which do you expect to gain electrons?i. Gaii. Pbiii. Cliv. N
Select all the diatomic elements.
Which of the following is an atomic element?A) BrB) HC) ND) OE) Mg
Which elements from this list are main group elements?a. telluriumb. potassiumc. vanadiumd. manganese
Which elements from this list are transition elements? a. Crb. Brc. Mod. Cs 
Classify each element as an alkali metal, alkaline earth metal, halogen, or noble gas.a. Fb. Src. Kd. Nee. At
What is the charge on the most stable ion of each of the following elements? K, I, Mg, O, Al, N, Ba, S
Which pair of elements do you expect to be most similar? Why? a. N and Nib. Mo and Sn c. Na and Mg d. Cl and F e. Si and P 
Using the periodic table, predict the charges of the ions of the following element: (a) Ga
Using the periodic table, predict the charges of the ions of the following element: (b) Sr
Using the periodic table, predict the charges of the ions of the following element: (c) As
Using the periodic table, predict the charges of the ions of the following element: (d) Br
Using the periodic table, predict the charges of the ions of the following element: (e) Se
Using the periodic table to guide you, predict the chemical formula and name of the compound formed by the following elements: (a) Ga and F
Using the periodic table to guide you, predict the chemical formula and name of the compound formed by the following elements: (b) Li and H
Using the periodic table to guide you, predict the chemical formula and name of the compound formed by the following elements: (c) Al and I
Using the periodic table to guide you, predict the chemical formula and name of the compound formed by the following elements: (d) K and S
The element fluorine is classified in the periodic table as a/an a. metal. b. alkali metal. c. metalloid. d. halogen.
The symbol for each of the following elements are: Calcium, Chromium, Carbon, Phosphorous, and Iodine a. C, Cr, Ca, Po, I b. Ca, Cr, C, P, I c. C, Cr, Ca, P, I d. Ca, Cr, C, Ph, I e. none of them
The periodic table is based on an element's a. molecular size. b. atomic mass. c. atomic number. d. molecular mass.
The two most reactive families of elements are the halogens and the alkali metals. How do they differ in their reactivities?
What is the name for each of the following groups in the periodic table? Group 1A                     Group 2A                     Group 6A                     Group 7A                     Group 8A
Distinguish between the following terms.a. molecule versus ion
Distinguish between the following terms.d. anion versus cation
Which of the following statements are true? For the false statements, correct them.b. Element 118 should be a nonmetal.
Which of the following statements are true? For the false statements, correct them.c. Hydrogen has mostly metallic properties.
Which of the following statements are true? For the false statements, correct them.d. A family of elements is also known as a period of elements.
Which of the following statements are true? For the false statements, correct them.e. When an alkaline earth metal, A, reacts with a halogen, X, the formula of the covalent compound formed should be A2X.
Which of the following elements is a halogen? A) Ne             B) I                     C) O             D) K                 E) Mg
What are the symbols of the following metals: sodium, radium, iron, gold, manganese, lead?
What are the symbols of the following nonmetals: fluorine, chlorine, bromine, sulfur, oxygen, phosphorus?
Give the names of the metals that correspond to the following symbols: Sn, Pt, Hg, Mg, K, Ag.
Give the names of the nonmetals that correspond to the following symbols: As, I, Xe, He, C, Si.
a. Classify the following elements as metals or nonmetals:    Mg     Si      Rn    Ti       Ge     Eu    Au      B       Am    Bi       At      Br
Identify the elements that correspond to the following atomic numbers. Label each as either a noble gas, a halogen, an alkali metal, an alkaline earth metal, a transition metal, a lanthanide metal, or an actinide metal.b. 4
Identify the elements that correspond to the following atomic numbers. Label each as either a noble gas, a halogen, an alkali metal, an alkaline earth metal, a transition metal, a lanthanide metal, or an actinide metal.f. 92
Fill in the blanks to complete the sentences below.  1. Copper, silver, and gold have all been know since ancient times because they appear in nature in  ________   and were thus discovered thousands of years ago. But the majority of elements  ________   and consequently, are hard to found in nature. Readily oxidized so that they are covered with coloured film Upper ground and water Elemental form Every most known compounds are deep in ground readily form compounds
Classify each element as a metal, nonmetal, or semimetal.a. Asb. Brc. Pbd. Fee. Krf. Sn
Classify each element as a metal, nonmetal, or semimetal. a. S  b. At c. He d. Al e. Mn f. Sr  
From the periodic table below, give the name, symbol, atomic number, atomic mass, period number, and group number of(a) the building-block elements (red), which occur in nearly every biological molecule, and 
From the periodic table below, give the name, symbol, atomic number, atomic mass, period number, and group number of(b) the macronutrients (green), which are either essential ions in cell fluids or are part of many biomolecules.
Identify the elements that correspond to the following atomic numbers. Label each as either a noble gas, a halogen, an alkali metal, an alkaline earth metal, a transition metal, a lanthanide metal, or an actinide metal.g. 55
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(b) europium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(c) iodine
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(d) indium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(e) lithium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(f) oxygen
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(g) cadmium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(h) terbium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(i) rhenium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(a) uranium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(b) bromine
Use the box color(s) in the periodic table below to identify the element(s) described by each of the following:(a) Four elements that are nonmetals
Use the box color(s) in the periodic table below to identify the element(s) described by each of the following:(b) Two elements that are metals
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(c) strontium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(d) neon
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(e) gold
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(f) americium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(g) rhodium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(h) sulfur
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(i) carbon
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(j) potassium
Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:(a) cobalt
What monatomic ions would you expect potassium (Z = 19) and bromine (Z = 35) to form?
What monatomic ions would you expect radium (Z = 88) and selenium (Z = 34) to form?
The symbol CO stands for carbon monoxide, but the symbol Co stands for the element cobalt. Explain.
Use the periodic table to give the name and symbol for each of the following elements:(a) the noble gas in the same period as germanium
Use the periodic table to give the name and symbol for each of the following elements:(b) the alkaline earth metal in the same period as selenium
Use the periodic table to give the name and symbol for each of the following elements:(c) the halogen in the same period as lithium
Use the periodic table to give the name and symbol for each of the following elements:(d) the chalcogen in the same period as cadmium
Give the name, atomic symbol, and group number of the element with each Z value, and classify it as a metal, metalloid, or nonmetal:(a) Z = 32 
Give the name, atomic symbol, and group number of the element with each Z value, and classify it as a metal, metalloid, or nonmetal:(b) Z = 15 
Give the name, atomic symbol, and group number of the element with each Z value, and classify it as a metal, metalloid, or nonmetal:(c) Z = 2 
Give the name, atomic symbol, and group number of the element with each Z value, and classify it as a metal, metalloid, or nonmetal:(d) Z = 3 
Give the name, atomic symbol, and group number of the element with each Z value, and classify it as a metal, metalloid, or nonmetal:(e) Z = 42
Give the name, atomic symbol, and group number of the element with each  Z value, and classify it as a metal, metalloid, or nonmetal:(a) Z = 33 
Give the name, atomic symbol, and group number of the element with each  Z value, and classify it as a metal, metalloid, or nonmetal:(b) Z = 20 
Give the name, atomic symbol, and group number of the element with each  Z value, and classify it as a metal, metalloid, or nonmetal:(c) Z = 35 
Give the name, atomic symbol, and group number of the element with each  Z value, and classify it as a metal, metalloid, or nonmetal:(d) Z = 19 
Give the name, atomic symbol, and group number of the element with each  Z value, and classify it as a metal, metalloid, or nonmetal:(e) Z = 13
Fill in the blanks:(a) The symbol and atomic number of the heaviest alkaline earth metal are _____ and _____.
Fill in the blanks:(b) The symbol and atomic number of the lightest metalloid in Group 4A(14) are _____ and _____.
Fill in the blanks:(c) Group 1B(11) consists of the coinage metals. The symbol and atomic mass of the coinage metal whose atoms have the fewest electrons are _____ and _____.
Fill in the blanks:(d) The symbol and atomic mass of the halogen in Period 4 are _____ and _____.
Fill in the blanks:(a) The symbol and atomic number of the heaviest nonradioactive noble gas are _____ and _____.
Fill in the blanks:(b) The symbol and group number of the Period 5 transition element whose atoms have the fewest protons are _____ and _____.
Fill in the blanks:(c) The elements in Group 6A(16) are sometimes called the  chalcogens. The symbol and atomic number of the first metallic chalcogen are _____ and ______.
Fill in the blanks:(d) The symbol and number of protons of the Period 4 alkali metal atom are _____ and _____.
Use the box color(s) in the periodic table below to identify the element(s) described by each of the following:(c) Three elements that are gases at room temperature
Use the box color(s) in the periodic table below to identify the element(s) described by each of the following:(d) Three elements that are solid at room temperature
Use the box color(s) in the periodic table below to identify the element(s) described by each of the following:(k) An element that forms no compounds
Give the correct symbol for tin.
Give the correct symbol for manganese.
Give the correct symbol for potassium.
Give the correct symbol for carbon.
Give the correct symbol for sodium.
Give the correct symbol for nitrogen.
Give the correct symbol for chlorine.
The ion N3- has ___________ protons and _____________ electrons?Enter the chemical symbol of the element.
What is the chemical symbol for potassium?a. Pb. Poc. Pud. K 
Enter the symbols for the ions with the following numbers of protons and electrons.a. 30 protons and 28 electronsb. 9 protons and 10 electronsc. 82 protons and 78 electronsd. 34 protons and 36 electrons
State the number of electrons lost or gained when the following elements form ions: Sb, Group 2A, As, Te, I
Which of the following forms cations that can have different charges? a. lead b. cobalt c. Cr d. Ce e. all of the aboveWhich among the following elements does not exist as a diatomic molecule in nature? a. hydrogen b. nitrogen c. fluorine d. neon e. none of these What is the charge on the radium ion? a. 1+ b. 2+ c. 3+ d. 1- e. 2-What is the correct formula of a compound that contains three sulfide ions and two aluminum ions? a. S3Al2 b. S2Al3 c. Al2S3 d. Al3S2 e. none of the above
Part AWhich row of the periodic table contains the most recently discovered elements? Express your answer as an integer. Part BCan you suggest a reason? 
Give the symbol for an element that is 1) a halogen. ____ 2) an alkali metal. ____ 3) a noble gas. ____ 4) an alkaline earth metal. ____
The element sulfur is in group ____ and period _____. The element gallium is in group ______ and period ______. The element nickel is in group _____ and period ______.
Which element does X represent in the following expression: 5525X? Enter the chemical symbol of the element.
Give the symbol for an element that is
Which of the following elements do NOT normally exist as diatomic molecules?
Elements in group 1A are best describe as:(i) Alkali Metals. Soft, silvery metals that react rapidly with water.(ii) Halogens. Colorful, corrosive nonmetals.(iii) Alkaline Earth Metals. Silvery meatls that are less reactive that alkali metals.(iv) Noble Gases. Colorless gases with very low chemical reactivity.
Which of these is least characteristic of metals?a. Moderately high melting pointb. Brittlenessc. Malleabilityd. Good thermal conductivitye. Good electrical conductivity 
What is the name of the alkali metal that is in period 2? What is the name of the halogen that is in period 5? What is the name of the alkaline earth metal that is in period 3? What is the name of the noble gas that is in period 3?
Match the following symbols with their elements names.
Which of the following elements consists of molecules containing four atoms? Choose the correct answer below. a. fluorine b. sulfur c. phosphorus d. bromine e. none of these is correct