Question 1

Electron affinity is always a positive quantity.

Accepted Answer

A) True 
 B)False

Question 2

Consider the following reaction 2A + 3F2  →\rarr→ 2AF3.What is the formula for the reaction product if we substitute sulfur for fluorine?

Accepted Answer

A)  A2S3
B)  A3S2
C)  AS3
D)  A3S
E)  AS F) A) and B)
G) A) and C)

Question 3

Why is the Mg2+ ion smaller than F-, even though they are isoelectronic?

Accepted Answer

Mg²⁺ has a h...

Question 4

Write the ground-state electron configuration for O2-.

Accepted Answer

Question 5

Which of the following elements has the greatest metallic character?

Accepted Answer

A)  Ca
B)  Mg
C)  Ba
D)  As
E)  SeF) A) and D)
G) All of the above

Question 6

Write the ground-state electron configuration for S2-.

Accepted Answer

Question 7

The general electron configuration for atoms of all elements in Group 5A is

Accepted Answer

A)  ns2np6
B)  ns2np5
C)  ns2np4
D)  ns2np3
E)  ns2np1F) None of the above
G) C) and D)

Question 8

Given the following melting point data, what is a reasonable estimate of the melting point of potassium.

Accepted Answer

The answer of Given the following melting point data, what...

Question 9

Which one of the following does not have [Kr] as its electronic configuration?

Accepted Answer

A)  Se2-
B)  Br-
C)  Rb+
D)  Y3+
E)  Zn2+F) A) and E)
G) B) and E)

Question 10

Which of the elements listed below has the highest first ionization energy?

Accepted Answer

A)  C
B)  Ge
C)  P
D)  O
E)  SeF) A) and E)
G) None of the above

Question 11

The radii of ions are always smaller than the radii of the corresponding atoms of the same element.

Accepted Answer

A) True 
 B)False

Question 12

Amphoteric oxides exhibit both acidic and basic properties.

Accepted Answer

A) True 
 B)False

Question 13

The sulfide ion, S2-,  is isoelectronic with which one of the following?

Accepted Answer

A)  O2-
B)  F-
C)  Na+
D)  Al3+
E)  K+F) C) and E)
G) A) and D)

Question 14

What is the charge on the stable ion formed by selenium?

Accepted Answer

A)  +2
B)  +1
C)  -1
D)  -2
E)  -3F) A) and E)
G) A) and B)

Question 15

Which of the following is the electron configuration of a sulfide ion?

Accepted Answer

A)  [Ne]3s23p4
B)  [Ne]
C)  [Ne]3s23p1
D)  [Ar]
E)  [Ne]3s23p2F) A) and D)
G) D) and E)

Question 16

Which of the elements listed below has the smallest first ionization energy?

Accepted Answer

A)  C
B)  Ge
C)  P
D)  O
E)  SeF) B) and D)
G) A) and C)

Question 17

Which element will display an unusually large jump in ionization energy values between I3 and I4, its third and fourth ionization energies?

Accepted Answer

A)  Na
B)  Mg
C)  Al
D)  Si
E)  PF) B) and C)
G) C) and E)

Question 18

The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s)  →\rarr→  Na+(g) + e- is therefore

Accepted Answer

A)  495.9 kJ/mol.
B)  less than 495.9 kJ/mol.
C)  greater than 495.9 kJ/mol.
D)  is equal to the electron affinity of sodium.
E)  is equal to the second ionization energy of sodium. F) A) and B)
G) D) and E)

Question 19

Write the ground-state electron configuration for Mg2+.

Accepted Answer

Question 20

Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl-. increasing radius  →\rarr→

Accepted Answer

A)  K+ - 2- 3-
B)  K+ 3- 2- -
C)  P3- 2- - +
D)  Cl- 2- 3- +
E)  Cl- 2- + 3- F) B) and D)
G) All of the above

Exam 8: Periodic Relationships Among the Elements

Electron affinity is always a positive quantity.

Correct AnswerverifiedShow Answer

Write the ground-state electron configuration for S2-.

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Why is the Mg2+ ion smaller than F-, even though they are isoelectronic?

Correct AnswerverifiedMg2+ has a h...View AnswerShow Answer

The general electron configuration for atoms of all elements in Group 5A is

Correct AnswerverifiedShow Answer

Consider the following reaction 2A + 3F2 →\rarr→ 2AF3.What is the formula for the reaction product if we substitute sulfur for fluorine?

Correct AnswerverifiedShow Answer

Which of the elements listed below has the smallest first ionization energy?

Correct AnswerverifiedShow Answer

What is the charge on the stable ion formed by selenium?

Correct AnswerverifiedShow Answer

Which one of the following does not have [Kr] as its electronic configuration?

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Which of the following elements has the greatest metallic character?

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Given the following melting point data, what is a reasonable estimate of the melting point of potassium.

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The sulfide ion, S2-, is isoelectronic with which one of the following?

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Amphoteric oxides exhibit both acidic and basic properties.

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Write the ground-state electron configuration for O2-.

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Which of the elements listed below has the highest first ionization energy?

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Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl-. increasing radius →\rarr→

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Write the ground-state electron configuration for Mg2+.

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The radii of ions are always smaller than the radii of the corresponding atoms of the same element.

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The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s) →\rarr→ Na+(g) + e- is therefore

Correct AnswerverifiedShow Answer

Which of the following is the electron configuration of a sulfide ion?

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Which element will display an unusually large jump in ionization energy values between I3 and I4, its third and fourth ionization energies?

Correct AnswerverifiedShow Answer

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Write the ground-state electron configuration for S^2-.

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Why is the Mg²⁺ ion smaller than F^-, even though they are isoelectronic?

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Mg²⁺ has a h...
View Answer

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Consider the following reaction 2A + 3F₂ $\rarr$ 2AF₃.What is the formula for the reaction product if we substitute sulfur for fluorine?

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The sulfide ion, S^2-, is isoelectronic with which one of the following?

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Write the ground-state electron configuration for O^2-.

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Arrange the following ions in order of increasing ionic radius: K⁺, P^3-, S^2-, Cl^-. increasing radius $\rarr$

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Write the ground-state electron configuration for Mg²⁺.

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The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s) $\rarr$ Na⁺(g) + e^- is therefore

Correct Answer
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Which element will display an unusually large jump in ionization energy values between I₃ and I₄, its third and fourth ionization energies?

Correct Answer
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