Question 1

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.

Question 2

Which of the following elements has the smallest atomic radius?

Accepted Answer

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

Question 3

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 4

Which of the following electron configurations represents the ground state of an element?

Accepted Answer

A)   [Ne]3s13p1
B)   [He]2s12p3
C)   [Ne]3s23p23d1
D)   [Ne]3s23p33d1
E)   [Ne]3s23p3

Question 5

In moving down a group in the periodic table, the oxides of the elements become more acidic in nature.

Accepted Answer

A) True 
 B)False

Question 6

The maximum number of electrons in an atom with the same value of n is 2n2.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following sublevels is filled last? 3d, 4s, 4p, 4d, 5s

Accepted Answer

A)   3d
B)   4s
C)   4p
D)   4d
E)   5s

Question 8

Write down the full electron configuration for ground state atoms of
a. S (element 16).
b. Pd (element 46).

Accepted Answer

a. 1s²2s²2p⁶3...

Question 9

Select the diamagnetic ion.

Accepted Answer

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

Question 10

Which of the following electron configurations is correct for the excited state of an element?

Accepted Answer

A)   [He]2s22p5
B)   [Ne]3s23p1
C)   [Ar]4s14p1
D)   [Kr]5s24d7
E)   [He]1p1

Question 11

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

Accepted Answer

A)   5, 2, -1, l, ms)  for the highest energy electron in the ground state of tin, Sn. 
A)   5, 2, -1,   
B)   5, 2, 0,   
C)   5, 1, 2,   
D)   5, 1, 0,   
E)   5, 2, 1,  " class="answers-bank-image d-inline" rel="preload" >
B)   5, 2, 0, l, ms)  for the highest energy electron in the ground state of tin, Sn. 
A)   5, 2, -1,   
B)   5, 2, 0,   
C)   5, 1, 2,   
D)   5, 1, 0,   
E)   5, 2, 1,  " class="answers-bank-image d-inline" rel="preload" >
C)   5, 1, 2, l, ms)  for the highest energy electron in the ground state of tin, Sn. 
A)   5, 2, -1,   
B)   5, 2, 0,   
C)   5, 1, 2,   
D)   5, 1, 0,   
E)   5, 2, 1,  " class="answers-bank-image d-inline" rel="preload" >
D)   5, 1, 0, l, ms)  for the highest energy electron in the ground state of tin, Sn. 
A)   5, 2, -1,   
B)   5, 2, 0,   
C)   5, 1, 2,   
D)   5, 1, 0,   
E)   5, 2, 1,  " class="answers-bank-image d-inline" rel="preload" >
E)   5, 2, 1, l, ms)  for the highest energy electron in the ground state of tin, Sn. 
A)   5, 2, -1,   
B)   5, 2, 0,   
C)   5, 1, 2,   
D)   5, 1, 0,   
E)   5, 2, 1,  " class="answers-bank-image d-inline" rel="preload" >

Question 12

Select the element with the greatest metallic character.

Accepted Answer

A)   Li
B)   Ca
C)   Al
D)   Pb
E)   Cs

Question 13

How many valence electrons are there in an atom with the electron configuration [noble gas]ns2(n - 1) d10np3?

Accepted Answer

A)   2
B)   3
C)   5
D)   10
E)   15

Question 14

Select the most acidic compound from the following:

Accepted Answer

A)   SO2
B)   Al2O3
C)   CaO
D)   PbO
E)   H2O

Question 15

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 16

Select the correct electron configuration for sulfur (Z = 16) .

Accepted Answer

A)   1s21p62s22p6
B)   1s22s22p83s23p4
C)   1s22s22p83s23p2
D)   1s22s22p63s23p4
E)   1s22s22p63s23d4

Question 17

Which of the following electron configurations is not possible for an atom in an excited state?

Accepted Answer

A)   1s22s22p63s23p63d104s14p1
B)   1s22s22p63s13p5
C)   1s22s22p63s23p23d2
D)   1s22s22p63s23p63d104s2
E)   1s22s22p63s23p63d104s14p3

Question 18

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 19

Which one of the following equations correctly represents the process relating to the ionization energy of X?

Accepted Answer

A)   X(s)   X+(g)  + e-
B)   X2(g)   X+(g)  + X-(g) 
C)   X(g)  + e-  X-(g) 
D)   X-(g)   X(g)  + e-
E)   X(g)   X+(g)  + e-

Question 20

Elements with ________________ first ionization energies and ___________ electron affinities generally form cations.

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 the above is generally correct.

Exam 8: Electron Configuration and Chemical Periodicity

Metallic behavior is generally associated with

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Select the diamagnetic ion.

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Which of the following sublevels is filled last? 3d, 4s, 4p, 4d, 5s

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Which one of the following equations correctly represents the process relating to the ionization energy of X?

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Select the element with the greatest metallic character.

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Which of the following elements has the smallest atomic radius?

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How many valence electrons are there in an atom with the electron configuration [noble gas]ns2(n - 1) d10np3?

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Which of the following electron configurations is correct for the excited state of an element?

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In moving down a group in the periodic table, the oxides of the elements become more acidic in nature.

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Which of the following electron configurations is not possible for an atom in an excited state?

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Select the most acidic compound from the following:

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

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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 tin, Sn.

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

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Write down the full electron configuration for ground state atoms of a. S (element 16). b. Pd (element 46).

Correct Answerverifieda. 1s22s22p63...View AnswerShow Answer

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

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Select the correct electron configuration for sulfur (Z = 16) .

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Which of the following electron configurations represents the ground state of an element?

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The maximum number of electrons in an atom with the same value of n is 2n2.

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Elements with ________________ first ionization energies and ___________ electron affinities generally form cations.

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How many valence electrons are there in an atom with the electron configuration [noble gas]ns²(n - 1) d¹⁰np³?

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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 tin, Sn.

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a. 1s²2s²2p⁶3...
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The maximum number of electrons in an atom with the same value of n is 2n².

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Elements with ______ first ionization energies and _ electron affinities generally form cations.

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