Question 1

Identify the ground-state electron configuration for Cd.

Accepted Answer

A)  [Kr]5s25d10 
B)  [Kr]5s24d105p2 
C)  [Kr]4d10 
D)  [Kr]5s24d8 
E)  [Kr]5s24d10 
A)  [Kr]5s25d10 
B)  [Kr]5s24d105p2 
C)  [Kr]4d10 
D)  [Kr]5s24d8 
E)  [Kr]5s24d10

Question 2

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

Accepted Answer

The large increase in ionizati

Question 3

The p orbital can hold a maximum of ________ electrons.

Accepted Answer

A)  2 
B)  6 
C)  8 
D)  10 
E)  14 
A)  2 
B)  6 
C)  8 
D)  10 
E)  14

Question 4

List the noble gas that has the highest ionization energy.

Accepted Answer

The answer of List the noble gas that has the...

Question 5

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 6

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. 
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.

Question 7

Using the periodic table, identify the element with the following exception electron configuration: [Xe]6s14f145d10

Accepted Answer

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

Question 8

Why do successive ionization energies increase?

Accepted Answer

After removing the first electron, the s

Question 9

Which of the following represents the change in electronic configuration that is associated with the first ionization energy of strontium?

Accepted Answer

A)  [ Kr] 5s15p1 → [ Kr] 5s1 + e- 
B)  [ Kr] 5s2 → [ Kr] 5s15p1 
C)  [ Kr] 5s2 → [ Kr] 5s1 + e- 
D)  [ Kr] 5s2 + e- → [ Kr] 5s25p1 
A)  [ Kr] 5s15p1 → [ Kr] 5s1 + e- 
B)  [ Kr] 5s2 → [ Kr] 5s15p1 
C)  [ Kr] 5s2 → [ Kr] 5s1 + e- 
D)  [ Kr] 5s2 + e- → [ Kr] 5s25p1

Question 10

What was the predicted formula for the oxide of eka-silicon (germanium)?

Accepted Answer

A)  XO2 
B)  XO 
C)  XO4 
D)  XO3 
A)  XO2 
B)  XO 
C)  XO4 
D)  XO3

Question 11

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

Accepted Answer

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

Question 12

Why do Li, Na, and K have similar chemical properties?

Accepted Answer

They are in the same

Question 13

Which reaction below represents the second electron affinity of S?

Accepted Answer

A)  S(g) + e⁻ → S⁻(g) 
B)  S⁻(g) + e⁻ → S2⁻(g) 
C)  S(g) → S⁺(g) + e⁻ 
D)  S⁻(g) → S(g) + e⁻ 
E)  S2⁻(g) → S⁻(g) + e⁻ 
A)  S(g) + e⁻ → S⁻(g) 
B)  S⁻(g) + e⁻ → S2⁻(g) 
C)  S(g) → S⁺(g) + e⁻ 
D)  S⁻(g) → S(g) + e⁻ 
E)  S2⁻(g) → S⁻(g) + e⁻

Question 14

How many of the following elements have two unpaired electrons in the ground state? C O Ti Si

Accepted Answer

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

Question 15

Using the periodic table, identify the element with the following exception electron configuration: [Ar]4s13d5

Accepted Answer

A)  Ni 
B)  Co 
C)  Cr 
D)  Mn 
E)  Fe 
A)  Ni 
B)  Co 
C)  Cr 
D)  Mn 
E)  Fe

Question 16

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

Accepted Answer

A)  [Ar]4s23d2 
B)  [Ar]4s1 3d3 
C)  [Ar]3d4 
D)  [Ar]4s23d4 
E)  [Ar]4s13d5 
A)  [Ar]4s23d2 
B)  [Ar]4s1 3d3 
C)  [Ar]3d4 
D)  [Ar]4s23d4 
E)  [Ar]4s13d5

Question 17

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

Question 18

Place the following elements in order of increasing atomic radius. P Ba Cl

Accepted Answer

A)  Ba < P < Cl 
B)  P < Cl < Ba 
C)  Cl < P < Ba 
D)  Cl < Ba < P 
E)  Ba < Cl < P 
A)  Ba < P < Cl 
B)  P < Cl < Ba 
C)  Cl < P < Ba 
D)  Cl < Ba < P 
E)  Ba < Cl < P

Question 19

Define electron affinity.

Accepted Answer

Electron affinity is the energ

Question 20

Identify the ground-state electron configuration for Se.

Accepted Answer

A)  [Ar]4s23d104p4 
B)  [Ar]4s24d104p4 
C)  [Ar]4s23d104p6 
D)  [Ar]4s23d10 
E)  [Ar]3d104p4 
A)  [Ar]4s23d104p4 
B)  [Ar]4s24d104p4 
C)  [Ar]4s23d104p6 
D)  [Ar]4s23d10 
E)  [Ar]3d104p4

Exam 8: Periodic Properties of the Elements

Identify the ground-state electron configuration for Cd.

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

The p orbital can hold a maximum of ________ electrons.

List the noble gas that has the highest ionization energy.

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

Choose the statement that is TRUE.

Using the periodic table, identify the element with the following exception electron configuration: [Xe]6s14f145d10

Why do successive ionization energies increase?

Which of the following represents the change in electronic configuration that is associated with the first ionization energy of strontium?

What was the predicted formula for the oxide of eka-silicon (germanium)?

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

Why do Li, Na, and K have similar chemical properties?

Which reaction below represents the second electron affinity of S?

How many of the following elements have two unpaired electrons in the ground state? C O Ti Si

Using the periodic table, identify the element with the following exception electron configuration: [Ar]4s13d5

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

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

Place the following elements in order of increasing atomic radius. P Ba Cl

Define electron affinity.

Identify the ground-state electron configuration for Se.

Units of Measurement for Physical and Chemical Change

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Filters

Below is a list of successive ionization energies (in kJ mol^-1) for a period 3 element. Identify the element and explain how you reached 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: [Xe]6s¹4f¹⁴5d¹⁰

Using the periodic table, identify the element with the following exception electron configuration: [Ar]4s¹3d⁵