Question 1

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

Accepted Answer

Mg²⁺ has a h...

Question 2

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) A) and E)
G) A) and C)

Question 3

Write the ground-state electron configuration for O2-.

Accepted Answer

Question 4

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) None of the above

Question 5

Write the ground-state electron configuration for S2-.

Accepted Answer

Question 6

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 D)
G) D) and E)

Question 7

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) A) and B)
G) B) and E)

Question 8

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) A) and B)

Question 9

Amphoteric oxides exhibit both acidic and basic properties.

Accepted Answer

A) True 
 B)False

Question 10

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) C) and D)
G) A) and D)

Question 11

Write the ground-state electron configuration for Mg2+.

Accepted Answer

Question 12

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) B) and D)
G) B) and E)

Question 13

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 C)
G) A) and C)

Question 14

Electron affinity is always a positive quantity.

Accepted Answer

A) True 
 B)False

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) B) and E)
G) B) and D)

Question 16

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 17

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 18

Which of the following elements has the greatest metallic character?

Accepted Answer

A)  Ca
B)  Mg
C)  Ba
D)  As
E)  SeF) A) and B)
G) A) and C)

Question 19

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

Accepted Answer

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

Question 20

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) B) and C)
G) B) and E)

Exam 8: Periodic Relationships Among the Elements

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

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

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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

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

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Write the ground-state electron configuration for Mg2+.

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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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Which of the following elements has the greatest metallic character?

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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?

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

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

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

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Write the ground-state electron configuration for S2-.

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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

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

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Electron affinity is always a positive quantity.

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Write the ground-state electron configuration for O2-.

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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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Amphoteric oxides exhibit both acidic and basic properties.

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

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Mg²⁺ has a h...
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Write the ground-state electron configuration for Mg²⁺.

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

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

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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

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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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