| Sections | |||
|---|---|---|---|
| Periodic Table | 28 mins | 0 completed | Learn |
| Mole Concept | 37 mins | 0 completed | Learn Summary |
| Isotopes | 12 mins | 0 completed | Learn Summary |
| Mass Spectrometry | 9 mins | 0 completed | Learn |
| Subatomic Particles | 8 mins | 0 completed | Learn |
| Atomic Theory | 16 mins | 0 completed | Learn |
| Thomson's Cathode Ray Tube Experiment | 8 mins | 0 completed | Learn |
| Oil Drop Experiment | 7 mins | 0 completed | Learn |
| The Chadwick Neutron Experiment | 6 mins | 0 completed | Learn |
| Gold Foil Experiment | 10 mins | 0 completed | Learn |
| End of Chapter 2 Problems | 28 mins | 0 completed | Learn |
| Additional Guides |
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| Periodic Table Charges |
| Calculating Molar Mass |
| Calculating Grams to Moles |
Solution: An ion has 20 protons, 18 electrons, and a mass number of 41. Part 1 How many neutrons does this ion have? Part 2What is the symbol for this ion? Enter both the mass and the atomic number.
Problem
An ion has 20 protons, 18 electrons, and a mass number of 41.
Part 1
How many neutrons does this ion have?
Part 2
What is the symbol for this ion? Enter both the mass and the atomic number.
Practice Problems
What do these have in common?
A. The same number ...
Give the number of protons, the number of neutron...
What is the name of the element that has atomic nu...
Which statement concerning the structure of the at...
How many electrons are necessary to produce a char...
Which statements about subatomic particles are tru...
Identify the charges of the protons, neutrons, and...
How many electrons would it take to equal the mass...
Consider each of the following statements:
...
A helium nucleus has two protons and two neutrons....
What is the name of the atom that has the atomic n...
Consider the species 44 Ca+2. How many electrons, ...
The mass of a neutron is equal to the mass of a pr...
All neutral atoms of tin have 50 protons and 50 el...
Answer the following questions.
Flerovium was ma...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Fill in the blanks to complete the table.
Determine the number of protons and electrons in e...
Which of the following species is isoelectronic wi...
Fill in the blanks to complete the table.
In all the neutral atoms, there are equal numbers ...
Which statement concerning the structure of the at...
The number of neutrons in the following ion is:
...
An argon atom is isoelectronic with
(A) Cl
(B) C...
Which pair of particles has the same number of ele...
Which ion has twenty-eight electrons?
A. Cr2+
B....
Which of the following species is isoelectronic wi...
Which of the following sets contains species that ...
The word isoelectronic means having an equal numbe...
A sodium ion differs from a sodium atom in that th...
In which pair are the two species both isoelectri...
Which of the following statements is TRUE?
(A) at...
A hydrogen-3 cation has...
A. No electrons.
B...
What is the symbol of the ion having 12 protons an...
Which one of the following species is not isoele...
What is the molar mass (g/mol) of a sample of alum...
How many protons are there in a gold (Au) nucleus?...
What is the charge of a Boron (B) ion with 7 elect...
What happens when a bromine atom becomes a bromide...
One isotope of a metallic element has a mass numbe...
Which of the following is the symbol for the ion w...
Identify the following element: a halogen whose an...
Which of the following statements is/are TRUE abou...
What do these have in common?
20Ne 19F- ...
Vanadium can have multiple ions. When vanadium has...
Which ion has twenty-eight electrons?
A. Cr2+
B....
How many neutrons and electrons are present in the...
What species is represented by the following infor...
Complete the following table by filling in the mis...
Predictable charges of some common ions. Notice th...
Give names and symbols for the following elements....
Consider an atom of
10B.What is the symbol of ...
Consider an atom of
10B.What is the symbol of ...
Fill in the gaps in the following table:
...
Identify the following elements.1224 X
Identify the following elements.2858 X
Identify the following elements.46104 X
Identify the following elements.74183 X
Identify the following elements. 80202 X
Identify the following elements. 78195 X
Identify the following elements. 76184 X
Identify the following elements. 83209 X
Identify the element represented by each of the fo...
Identify the element represented by each of the fo...
Identify the element represented by each of the fo...
Identify the element represented by each of the fo...
Identify the following atoms.A halogen with 53 ele...
Identify the element represented by each of the fo...
Identify the following atoms.A noble gas with A = ...
Identify the element represented by each of the fo...
Identify the element represented by each of the fo...
Identify the element represented by each of the fo...
Element X is toxic to humans in high concentration...
Which of the following drawings represents a neut...
Which of the following drawings represents an Na ...
Give names and symbols for the following elements....
Give names and symbols for the following elements....
Fill in the blanks to complete the table.
...
Fill in the blanks to complete the table.
...
Fill in the blanks to complete the table.
...
Fill in the blanks to complete the table.
...
Fill in the blanks to complete the table.
...
Fill in the blanks to complete the table.
...
Fill in the blanks to complete the table.
...
Complete the following table.
...
Complete the following table.
...
Complete the following table.
...
Complete the following table.
...
Complete the following table.
...
Complete the following table.
...
Complete the following table.
...
Fluorine occurs naturally as a single isotope.How ...
Fill in the blanks to complete the following table...
Fill in the blanks to complete the following table...
Fill in the blanks to complete the following table...
Fill in the blanks to complete the following table...
Fill in the blanks to complete the following table...
Determine whether each of the following statements...
Determine whether each of the following statements...
Determine whether each of the following statements...
Define atomic number and mass number.
If an atom has 15 protons, how many electrons does...
Where do the protons reside in an atom?
Iodine has a lower atomic weight than tellurium ...
In what part of the atom does the strong nuclear f...
Define A, Z, and X
in the following notation ...
The structure of the atom. A cloud of rapidl...
What basic properties of the electron were reporte...
How and by whom was the electron discovered?
List the three subatomic particles that compose at...
Give the basic properties (mass and charge) of the...
Give the basic properties (mass and charge) of the...
Explain the difference between Z (the atomic numbe...
What is an ion?
What is a cation?
What is an anion?
What is atomic mass?
Which of the following statements about subatomic ...
Which of the following statements about subatomic ...
Which of the following statements about subatomic ...
Which of the following statements about subatomic ...
In complete sentences, describe the similarities a...
To how many significant figures would you need to ...
A period at the end of sentence written with a gra...
Answer the following questions:What are the main s...
Answer the following questions:What is the charge,...
What is the difference between an atoms atomic num...
Answer the following questions:What is the charge,...
What is the difference between an elements atomic ...
Determine whether each of the following statements...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
Fill in the gaps in the following table:
...
Fill in the gaps in the following table:
...
Fill in the gaps in the following table:
...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Fill in the gaps in the following table, assuming ...
Fill in the gaps in the following table, assuming ...
Fill in the gaps in the following table, assuming ...
Fill in the gaps in the following table, assuming ...
How many protons and electrons are in each of the ...
How many protons and electrons are in each of the ...
How many protons and electrons are in each of the ...
How many protons and electrons are in each of the ...
Suppose that atomic masses were based on the assig...
How many electrons does it take to the equal the m...
Fill in the gaps in the following table, assuming ...
On a dry day, your body can accumulate static char...
A helium nucleus has two protons and two neutrons....
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
How many protons, neutrons, and electrons are in t...
What is the Z-number and the number of protons, el...
Complete this table. Note that the atoms/ions are ...
Consider an atom of osmium-190 (190Os). It has:(A)...
How many protons, electrons and neutrons are there...
Match each diagram to the atom or ion it represent...
Which statements about subatomic particles are fal...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
Vanadium can have multiple ions. When vanadium has...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
What is the symbol for an ion with 63 protons, 60 ...
What is the symbol of an ion with 16 protons, 18 n...
Complete the following table: ...
Complete the following table: ...
a. Specify the number of protons, neutrons, and el...
Give the number of protons, neutrons, and electron...
Which of the following statements about subatomic ...
Fill in the gaps in the following table:SymbolCo3+...
The ion O 2− has _____ protons and _____ electrons...
What species is represented by the following infor...
Fill in the gaps in the following table:
Fill in the gaps in the following table:
Which statement is true?(A) The nucleus of an atom...
Fill in the gaps in the following table:
Complete the following table:
The species O 2-, F -, N 3- and Na+ are all
a) an...
Complete the following table.84Kr ____ ...
Which of the following ions is not isoelectronic w...
Which of the following species is isoelectronic wi...
Give the complete chemical symbol for the followin...
A proton weighs 1.007276 amu, a neutron weighs 1.0...
All of the following species are isoelectronic ex...
Fill in the missing blanks on the following table:
How many neutrons are there in an atom of lead who...
The number of protons in an atom determines the id...
Determine the number of electrons, protons, and ne...
Specify the number of protons, neutrons, and elect...
The total numbers of neutrons, protons, and electr...
The ion has 3919 K+
A) 18 electrons, 18 protons,...
What does "X" represent in the following symbol?a....
The ion N3- has ___________ protons and __________...
The ion 3919K+ has:a. 18 electrons, 18 protons, 21...
The mass number is equal to
A) the sum of t...
An iron-56 nucleus contains
A) 56 protons an...
Determine the number of protons, neutrons and elec...
Identify each of the following elements:a. a membe...
Identify each of the following elements:b. a membe...
The atomic number indicates __________.
A) the ...
Identify each of the following elements:c. a noble...
What is the identity of element Q if the ion Q 2+ ...
Write the symbol of each atom using the AZX forma...
Determine whether the following statement is true ...
Write the symbol of each atom using the AZX forma...
Determine whether the following statement is true ...
How many electrons are in the ion, P 3-? A) 12 ...
What species is represented by the following infor...
Which of the drawings below represents a Ca 2+ ion...
Give the number of protons, neutrons, and electron...
Give the formula of a negative ion that would have...
Give the formula of a negative ion that would have...
Give the formula of a negative ion that would have...
Give the formula of a negative ion that would have...
Give an example of an ionic compound where both th...
Give an example of an ionic compound where both th...
Give an example of an ionic compound where both th...
Give an example of an ionic compound where both th...
Part ASpecify the number of protons, neutrons, and...
Do both members of the following pairs have the sa...
Do both members of the following pairs have the sa...
While it is helpful to know that many ions have th...
Which of the following atoms and ions is (are) iso...
Write the symbol for each of the following ions: (...
Write the symbol for each of the following ions: (...
Write the symbol of each atom using the format.a....
Write the symbol for each of the following ions:(c...
Which of the following is a symbol representing th...
Write the symbol for each of the following ions:(d...
What is the symbol for the isotope of 63Cu that po...
Write the symbol of each atom using the format.b....
Write the symbol of each atom using the format.c....
Write the symbol for each of the following ions:(b...
Write the symbol for each of the following ions: (...
Write the symbol for each of the following ions:(d...
An element’s most stable ion has a 2+ charge. If t...
Write the AZX notation for each atomic depiction:
Write the AZX notation for each atomic depiction:
Complete the following table, including the mass n...
Write the AZX notation for each atomic depiction:
Write the AZX notation for each atomic depiction:
Write the AZX notation for each atomic depiction:
Write the AZX notation for each atomic depiction:
For each ionic depiction, give the name of the par...
For each ionic depiction, give the name of the par...
For each ionic depiction, give the name of the par...
For each ionic depiction, give the name of the par...
For each ionic depiction, give the name of the par...
For each ionic depiction, give the name of the par...
49. What is the symbol for an ion with 63 protons,...
What is the identity of the element X in the follo...
Fill in the gaps in the following table, assuming ...
Fill in the gaps in the following table, assuming ...
What is the symbol of an ion with 16 protons, 18 n...
Identify each of the following elements:a. a membe...
Identify each of the following elements:b. a membe...
Identify each of the following elements:c. a noble...
Identify each of the following elements:d. a halog...
Write the following isotope in nuclide notation (e...
Write the following isotope in nuclide notation (e...
Write the following isotope in nuclide notation (e...
Write the following isotope in nuclide notation (e...
For the following isotope that have missing inform...
For the following isotope that have missing inform...
Write the nuclide notation, including charge if ap...
Write the nuclide notation, including charge if ap...
Write the nuclide notation, including charge if ap...
Write the nuclide notation, including charge if ap...
Fill in the gaps in the following table:SymbolP3-P...
Fill in the gaps in the following table:SymbolP3-P...
Fill in the gaps in the following table:SymbolP3-P...
Fill in the gaps in the following table:SymbolP3-P...
Fill in the gaps in the following table:SymbolP3-P...
Complete the following table:
Complete the following table:
Fill in the blanks to complete the following table...
Fill in the blanks to complete the following table...
Fill in the blanks to complete the following table...
Determine whether each of the following statements...
(a) Define atomic number and mass number.Which of ...
Even though several elements have only one natural...
2.22Determine whether each of the following statem...
2.22Determine whether each of the following statem...
2.22Determine whether each of the following statem...
Which of the following statements about subatomic ...
Which of the following statements is/are true? For...
Does a cation gain protons to form a positive char...
Write a brief description or definition of the fol...
Write a brief description or definition of the fol...
Answer the following questions:Among the main suba...
Consider an atom of 10B.How many protons, neutrons...
Consider an atom of 63Cu. How many protons, neutro...
What number of protons and neutrons is contained i...
What number of protons and neutrons is contained i...
What number of protons and neutrons is contained i...
What number of protons and neutrons is contained i...
What number of protons and neutrons is contained i...
What number of protons and neutrons is contained i...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
How many protons and neutrons are in the nucleus o...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
Determine the number of electrons in the Cr3+ ion.
For each of the following ions, indicate the numbe...
Complete the following table.
For each of the following ions, indicate the numbe...
Complete the following table.
For each of the following ions, indicate the numbe...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
Draw atomic depictions similar to those in Problem...
How many protons, neutrons, and electrons are in e...
Draw atomic depictions similar to those in Problem...
How many protons, neutrons, and electrons are in e...
Draw atomic depictions similar to those in Problem...
Draw atomic depictions similar to those in Problem...
Draw atomic depictions similar to those in Problem...
Draw atomic depictions similar to those in Problem...
For each of the following ions, indicate the numbe...
For each of the following ions, indicate the numbe...
Which of these atoms has the largest number of neu...
How many protons, neutrons, and electrons are in e...
Determine the number of protons and electrons in e...
In which of the following species is the differenc...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
How many protons, neutrons, and electrons are in e...
Uranium-235 is used in nuclear fission.Determine t...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Determine the number of protons and electrons in e...
Predict the charge of the ion formed by each of th...
Fill in the gaps in the following table, assuming ...
Fill in the gaps in the following table, assuming ...
How many protons and neutrons are present in an at...
Four Fe2+ ions are key components of hemoglobin, t...
Write the following isotope in hyphenated form (e....
Write the following isotope in hyphenated form (e....
Write the following isotope in hyphenated form (e....
Write the following isotope in hyphenated form (e....
For the following isotope that have missing inform...
For the following isotope that have missing inform...
Exercise 21.1 Write the following isotopes in hyp...
Identify each of the following elements. Give the ...
Identify each of the following elements. Give the ...
Identify each of the following elements. Give the ...
Identify each of the following elements. Give the ...
How many protons, neutrons and electrons are there...
The atomic number of oxygen is 8. What is the mass...How many protons are in an ion with 86 electrons a...
Some ions do not have a corresponding neutral atom...
How many protons are in an ion with 10 electrons a...Complete this table. Note that the atoms/ions are ...Complete the table.For which of the following isotopes is the neutron...How many protons, neutrons, and electrons are ther...Complete this table. Note that the atoms/ions are ...
Fill in the missing information in the following t...What is the isotope symbol for atoms that contain ...What is the charge on a hypothetical ion with 35 p...Be sure to answer all parts.Give the number of pro...How many protons, neutrons, and electrons are ther...An ion has 20 protons, 18 electrons, and a mass nu...
How many protons are in an ion with 86 electrons a...Determine the number of protons and electrons in e...Determine the number of protons and neutrons. Ente...
An ion has 14 neutrons, 10 electrons, and a mass n...Which of the following best describes why atoms ar...
Write the chemical symbols for three different ato...
Which of the following ions are isoelectronic with...
A sulfur atom has a mass of 34 amu. How many neutr...
The atomic number of an atom of 80Br is _____. (a...Write the symbol for 12648X. Express your answer a...Be sure to answer all parts.Part 1 of 2Do both mem...Be sure to answer all parts.Part 1 of 2Do both mem...Write the AXZ notation for the atomic depiction:Write the AXZ notation for the atomic depiction:Write the AXZ notation for the atomic depiction:Be sure to answer all parts.Part 1 of 2Do both mem...
Which atom and/or ion is (are) isoelectronic with ...A common of C has a mass of 12. The atomic number ...
Fill in the gaps in the following table, assuming ...When an atom loses one electron, the charge on its...How many protons are found in 131I, used in thyroi...How many neutrons are found in 131I, used in thyro...How many protons are found in 60Co, used in cancer...A particular atom has 58 protons and 82 neutrons. ...What symbol designates an ion that contains 13 pro...
An iron(II) ion has: (a) 24 electrons and a charge...
Write the symbol for each of the following ions: (...
How many protons does the As3+ ion possess?a. 30b....Write the chemical symbols for three different ato...Be sure to answer all parts.One isotope of a metal...The most likely mass number of atom with an atomic...
Determine the charge of each of the following ions...
Fill in the gaps in the following table:SymbolP3-P...