Ch.8 - Periodic Properties of the ElementsWorksheetSee 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

Solution: Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar?a. Mg > Na > P > Si > Arb. Ar > Si > P > Na > Mgc. Si > P > Ar > Na > Mgd

Problem

Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar?

a. Mg > Na > P > Si > Ar

b. Ar > Si > P > Na > Mg

c. Si > P > Ar > Na > Mg

d. Na > Mg > Si > P > Ar

e. Ar > P > Si > Mg > Na

Solution

We’re being asked to rank the elements in decreasing atomic radius .


Atomic radius represents the distance from the nucleus to the outer shell of an element. 

The trend of the atomic radius in the periodic table:

decreases going from left to right of a period

increases going down a group


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