Question 1

Use the periodic table to predict the most stable oxidation state for the following element: Na

Accepted Answer

A) +1 
B) +2 
C) +3 
D) -1 
E) -2 
A) +1 
B) +2 
C) +3 
D) -1 
E) -2 A

Question 2

Place the following in order of decreasing radius. Te2⁻ F⁻ O2⁻

Accepted Answer

A) F⁻ > O2⁻ > Te2⁻ 
B) F⁻ > Te2⁻ > O2⁻ 
C) Te2⁻ > O2⁻ > F⁻ 
D) Te2⁻ > F⁻ > O2⁻ 
E)  O2⁻ > F⁻ > Te2⁻ 
A) F⁻ > O2⁻ > Te2⁻ 
B) F⁻ > Te2⁻ > O2⁻ 
C) Te2⁻ > O2⁻ > F⁻ 
D) Te2⁻ > F⁻ > O2⁻ 
E)  O2⁻ > F⁻ > Te2⁻ C

Question 3

How many unpaired electrons are there in the ground-state of As?

Accepted Answer

A) 0 
B) 4 
C) 3 
D) 2 
E) 1 
A) 0 
B) 4 
C) 3 
D) 2 
E) 1 C

Question 4

Which atom in each group (I and II)has the smallest atomic radius? (I)Ba, Hf, At (II)As, Sb, Bi

Accepted Answer

A) Ba; As 
B) Ba; Bi 
C) At; As 
D) At; Bi 
A) Ba; As 
B) Ba; Bi 
C) At; As 
D) At; Bi

Question 5

An element that has the valence electron configuration 6s25d7 belongs to which period and group?

Accepted Answer

A) period 7; group 9 
B) period 6; group 7 
C) period 6; group 2 
D) period 6; group 9 
E) period 7; group 7 
A) period 7; group 9 
B) period 6; group 7 
C) period 6; group 2 
D) period 6; group 9 
E) period 7; group 7

Question 6

Below is a list of successive ionization energies (in kJ mol-1)for a period 3 element. Identify the element and explain how you came to that conclusion.
IE2 = 2250 IE3 = 3360 IE4 = 4560 IE5 = 7010 IE6 = 8500 IE7 = 27 100

Accepted Answer

The large increase in ionizati

Question 7

Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s14d5

Accepted Answer

A) Zr 
B) Ni 
C) Re 
D) Tc 
E) Mo 
A) Zr 
B) Ni 
C) Re 
D) Tc 
E) Mo

Question 8

Using the periodic table, identify the element with the following exception electron configuration: [Kr]4d10

Accepted Answer

A) Sn 
B) Ru 
C) Sr 
D) Cd 
E) Pd 
A) Sn 
B) Ru 
C) Sr 
D) Cd 
E) Pd

Question 9

Which of the following have their valence electrons in the same shell?

Accepted Answer

A) Li, N, F 
B) B, Si, As 
C) N, As, Bi 
D) He, Ne, F 
A) Li, N, F 
B) B, Si, As 
C) N, As, Bi 
D) He, Ne, F

Question 10

An element that has the valence electron configuration 6s26p2 belongs to which period and group?

Accepted Answer

A) period 6; group 16 
B) period 6; group 6 
C) period 6; group 4 
D) period 6; group 14 
E) period 6; group 9 
A) period 6; group 16 
B) period 6; group 6 
C) period 6; group 4 
D) period 6; group 14 
E) period 6; group 9

Question 11

Place the following in order of decreasing metallic character. P As K

Accepted Answer

A) P > As > K 
B) As > P > K 
C) K > P > As 
D) As > K > P 
E) K > As > P 
A) P > As > K 
B) As > P > K 
C) K > P > As 
D) As > K > P 
E) K > As > P

Question 12

Which element has the highest first electron affinity?

Accepted Answer

A) Na 
B) Mg 
C) O 
D) Ne 
A) Na 
B) Mg 
C) O 
D) Ne

Question 13

Choose the statement that is TRUE.

Accepted Answer

A) Outer electrons efficiently shield one another from nuclear charge. 
B) Core electrons effectively shield outer electrons from nuclear charge. 
C) Valence electrons are the most difficult of all electrons to remove. 
D) Core electrons are the easiest of all electrons to remove. 
E) All of the above are true. 
A) Outer electrons efficiently shield one another from nuclear charge. 
B) Core electrons effectively shield outer electrons from nuclear charge. 
C) Valence electrons are the most difficult of all electrons to remove. 
D) Core electrons are the easiest of all electrons to remove. 
E) All of the above are true.

Question 14

Using the periodic table, identify the element with the following exception electron configuration: [Xe]6s15d10

Accepted Answer

A) Hg 
B) Au 
C) Cd 
D) Ir 
E) Rg 
A) Hg 
B) Au 
C) Cd 
D) Ir 
E) Rg

Question 15

Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s14d8

Accepted Answer

A) Tc 
B) Ru 
C) Os 
D) Rh 
E) V 
A) Tc 
B) Ru 
C) Os 
D) Rh 
E) V

Question 16

Identify the element that has a ground-state electronic configuration of [Ar]4s23d104p1.

Accepted Answer

A) Al 
B) In 
C) Ga 
D) B 
A) Al 
B) In 
C) Ga 
D) B

Question 17

Identify the number of core electrons for O.

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 18

Why does the size of the transition elements stay roughly the same as you move across a period?

Accepted Answer

The electrons added as the transition el

Question 19

Use the periodic table to determine the ground-state electron configuration for the following element: Fe

Accepted Answer

A) [Ar]4s24d6 
B) [Ar]4s23d6 
C) [Ar]4s25d6 
D) [Ar]4s25d3 
E) [Ar]4s23d8 
A) [Ar]4s24d6 
B) [Ar]4s23d6 
C) [Ar]4s25d6 
D) [Ar]4s25d3 
E) [Ar]4s23d8

Question 20

Use the periodic table to determine the ground-state electron configuration for the following element: Co

Accepted Answer

A) [Ar]4s23d7 
B) [Ar]4s23d9 
C) [Ar]4s23d5 
D) [Ar]3d9 
E) [Ar]4s23d3 
A) [Ar]4s23d7 
B) [Ar]4s23d9 
C) [Ar]4s23d5 
D) [Ar]3d9 
E) [Ar]4s23d3

Exam 8: Periodic Properties of the Elements

Use the periodic table to predict the most stable oxidation state for the following element: Na

Place the following in order of decreasing radius. Te2⁻ F⁻ O2⁻

How many unpaired electrons are there in the ground-state of As?

Which atom in each group (I and II)has the smallest atomic radius? (I)Ba, Hf, At (II)As, Sb, Bi

An element that has the valence electron configuration 6s25d7 belongs to which period and group?

Below is a list of successive ionization energies (in kJ mol-1)for a period 3 element. Identify the element and explain how you came to that conclusion. IE2 = 2250 IE3 = 3360 IE4 = 4560 IE5 = 7010 IE6 = 8500 IE7 = 27 100

Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s14d5

Using the periodic table, identify the element with the following exception electron configuration: [Kr]4d10

Which of the following have their valence electrons in the same shell?

An element that has the valence electron configuration 6s26p2 belongs to which period and group?

Place the following in order of decreasing metallic character. P As K

Which element has the highest first electron affinity?

Choose the statement that is TRUE.

Using the periodic table, identify the element with the following exception electron configuration: [Xe]6s15d10

Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s14d8

Identify the element that has a ground-state electronic configuration of [Ar]4s23d104p1.

Identify the number of core electrons for O.

Why does the size of the transition elements stay roughly the same as you move across a period?

Use the periodic table to determine the ground-state electron configuration for the following element: Fe

Use the periodic table to determine the ground-state electron configuration for the following element: Co

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

Place the following in order of decreasing radius. Te²⁻ F⁻ O²⁻

An element that has the valence electron configuration 6s²5d⁷ belongs to which period and group?

Below is a list of successive ionization energies (in kJ mol^-1)for a period 3 element. Identify the element and explain how you came to that conclusion. IE₂ = 2250 IE₃ = 3360 IE₄= 4560 IE₅= 7010 IE₆= 8500 IE₇= 27 100

Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s¹4d⁵

Using the periodic table, identify the element with the following exception electron configuration: [Kr]4d¹⁰

An element that has the valence electron configuration 6s²6p² belongs to which period and group?

Using the periodic table, identify the element with the following exception electron configuration: [Xe]6s¹5d¹⁰

Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s¹4d⁸

Identify the element that has a ground-state electronic configuration of [Ar]4s²3d¹⁰4p¹.