Question 1

In forming ions of the first series of transition metals, the 4s electrons are lost before the 3d electrons.

Accepted Answer

A) True 
 B)False

Question 2

Select the correct electron configuration for Cu (Z = 29) .

Accepted Answer

A)   [Ar]4s23d9
B)   [Ar]4s13d10
C)   [Ar]4s24p63d3
D)   [Ar]4s24d9
E)   [Ar]5s24d9

Question 3

Describe how the atomic radii of main group elements vary with position in the periodic table.

Accepted Answer

Among the main group elements,...

Question 4

Which of the following elements is paramagnetic?

Accepted Answer

A)   Kr
B)   Zn
C)   Sr
D)   V
E)   Ar

Question 5

Select the correct set of quantum numbers (n, l, ml, ms)  for the highest energy electron in the ground state of potassium, K.

Accepted Answer

A)   4, 1, -1, ½
B)   4, 1, 0, ½
C)   4, 0, 1, ½
D)   4, 0, 0, ½
E)   4, 1, 1, ½

Question 6

Electron affinities become increasingly positive toward the right hand end of a period.

Accepted Answer

A) True 
 B)False

Question 7

When comparing the successive ionization energies of an element, an unusually big increase in ionization energy is seen when

Accepted Answer

A)   the first valence electron is removed.
B)   the second valence electron is removed.
C)   the eighth electron of is removed.
D)   the first core electron is removed.
E)   the last valence electron is removed.

Question 8

Select the diamagnetic ion.

Accepted Answer

A)   Cu2+
B)   Ni2+
C)   Cr3+
D)   Sc3+
E)   Cr2+

Question 9

An atom of element number 33 (As)  is in its ground electronic state. Which one of the following sets quantum numbers could not apply to any of its electrons?

Accepted Answer

A)   n = 2; l = 1; ml = -1; ms = +½
B)   n = 3; l = 0; ml = 0 ; ms = -½
C)   n = 3; l = 2; ml = -2; ms = -½
D)   n = 4; l = 0; ml = 0 ; ms = -½
E)   n = 4; l = 2; ml = 1 ; ms = +½

Question 10

Elements with _______________ first ionization energies and ___________ electron affinities generally form anions.

Accepted Answer

A)   low, very negative
B)   high, positive or slightly negative
C)   low, positive or slightly negative
D)   high, very negative
E)   None of these choices is generally correct.

Question 11

In many-electron atoms, which quantum numbers specify the energy of an electron?

Accepted Answer

A)   n and l
B)   n and ml
C)   l and ml
D)   n and ms
E)   n, l and ml

Question 12

The most basic oxides are formed from elements found in the __________________ region of the periodic table.

Accepted Answer

A)   upper right
B)   upper left
C)   center
D)   lower right
E)   lower left

Question 13

Which of the following elements will form a cation with a +2 charge?

Accepted Answer

A)   Si
B)   Sr
C)   Ga
D)   Cs
E)   S

Question 14

The effective nuclear charge for an atom is less than the actual nuclear charge due to

Accepted Answer

A)   shielding.
B)   penetration.
C)   paramagnetism.
D)   electron-pair repulsion.
E)   relativity.

Question 15

Which of the following elements has the smallest atomic radius?

Accepted Answer

A)   Li
B)   Ne
C)   Rb
D)   Sr
E)   Xe

Question 16

"Each electron in an atom must have its own unique set of quantum numbers" is a statement of

Accepted Answer

A)   the aufbau principle.
B)   the Pauli exclusion principle.
C)   Hund's rule.
D)   the periodic law.
E)   Heisenberg's principle.

Question 17

Which of the following ions will be most likely to form when selenium ionizes?

Accepted Answer

A)   Se6+
B)   Se4+
C)   Se2+
D)   Se2¯
E)   Se4¯

Question 18

In the ground state of an atom of silver (Ag) , how many electrons will there be with the quantum number l = 1? (The n, ml and ms quantum numbers may have any appropriate values.)

Accepted Answer

A)   9
B)   12
C)   18
D)   24
E)   36

Question 19

Elements with the highest first ionization energies are found in the ___________ region of the periodic table.

Accepted Answer

A)   lower left
B)   upper left
C)   center
D)   lower right
E)   upper right

Question 20

Metallic behavior is generally associated with

Accepted Answer

A)   elements with very negative electron affinities.
B)   elements with low ionization energies.
C)   elements with small atomic radii.
D)   elements with unpaired electrons.
E)   elements with partially filled p orbitals.

Exam 8: Electron Configuration and Chemical Periodicity

In forming ions of the first series of transition metals, the 4s electrons are lost before the 3d electrons.

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Which of the following elements has the smallest atomic radius?

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Metallic behavior is generally associated with

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The most basic oxides are formed from elements found in the __________________ region of the periodic table.

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In the ground state of an atom of silver (Ag) , how many electrons will there be with the quantum number l = 1? (The n, ml and ms quantum numbers may have any appropriate values.)

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Which of the following elements will form a cation with a +2 charge?

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Elements with _______________ first ionization energies and ___________ electron affinities generally form anions.

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Select the correct set of quantum numbers (n, l, ml, ms) for the highest energy electron in the ground state of potassium, K.

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Describe how the atomic radii of main group elements vary with position in the periodic table.

Correct AnswerverifiedAmong the main group elements,...View AnswerShow Answer

Which of the following ions will be most likely to form when selenium ionizes?

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The effective nuclear charge for an atom is less than the actual nuclear charge due to

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Which of the following elements is paramagnetic?

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Electron affinities become increasingly positive toward the right hand end of a period.

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When comparing the successive ionization energies of an element, an unusually big increase in ionization energy is seen when

Correct AnswerverifiedShow Answer

Elements with the highest first ionization energies are found in the ___________ region of the periodic table.

Correct AnswerverifiedShow Answer

An atom of element number 33 (As) is in its ground electronic state. Which one of the following sets quantum numbers could not apply to any of its electrons?

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Select the correct electron configuration for Cu (Z = 29) .

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In many-electron atoms, which quantum numbers specify the energy of an electron?

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Select the diamagnetic ion.

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"Each electron in an atom must have its own unique set of quantum numbers" is a statement of

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In the ground state of an atom of silver (Ag) , how many electrons will there be with the quantum number l = 1? (The n, m_l and m_s quantum numbers may have any appropriate values.)

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Elements with _____ first ionization energies and _ electron affinities generally form anions.

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Select the correct set of quantum numbers (n, l, m_l, m_s) for the highest energy electron in the ground state of potassium, K.

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Among the main group elements,...
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