Question 1

Which of the following sets of elements have the [noble gas]ns2np2 valence electron configuration?

Accepted Answer

A)   O, S, Se, Te, Po
B)   N, P, As, Sb, Bi
C)   F, Cl, Br, I, At
D)   C, Si, Ge, Sn, Pb
E)   Ti, Zr, HfF) B) and D)
G) C) and E)

Question 2

In neutral atoms, the 3d orbitals have higher energy than the 4s orbitals.

Accepted Answer

A) True 
 B)False

Question 3

Describe how the ionization energies of main group elements vary across a period in the periodic table, using a diagram if necessary.

Accepted Answer

Ionization energies generally ...

Question 4

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, ½
B)   5, 2, 0, ½
C)   5, 1, 2, ½
D)   5, 1, 0, ½
E)   5, 2, 1, ½F) A) and E)
G) B) and E)

Question 5

Which of the following sublevels is filled last?

Accepted Answer

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

Question 6

Which of the following atoms will be diamagnetic?

Accepted Answer

A)   Cr
B)   Ru
C)   Fe
D)   Pt
E)   CdF) A) and D)
G) B) and E)

Question 7

Which one of the following statements about orbital energies is incorrect?

Accepted Answer

A)   In the hydrogen atom, the energy of an orbital depends only on the value of the quantum number n.
B)   In many-electron atoms the energy of an orbital depends on both n and l.
C)   Inner electrons shield outer electrons more effectively than do electrons in the same orbital.
D)   The splitting of sublevels in many-electron atoms is explained in terms of the penetration effect.
E)   The energy of a given orbital increases as the nuclear charge Z increases.F) B) and D)
G) B) and E) E

Question 8

Which of the following elements has the largest atomic size?

Accepted Answer

A)   S
B)   Ca
C)   Ba
D)   Po
E)   RnF) None of the above
G) A) and E)

Question 9

Which of the following electron configurations is impossible?

Accepted Answer

A)   1s22s22p63s23p4
B)   1s22s22p53s13p4
C)   1s22s22p63s23p63d104s2
D)   1s22s22p63s33p4
E)   1s12s22p63s23p4F) D) and E)
G) B) and C)

Question 10

Select the paramagnetic ion.

Accepted Answer

A)   Cu+
B)   Ag+
C)   Fe3+
D)   Cd2+
E)   Ca2+F) A) and E)
G) A) and D)

Question 11

Select the element with the most negative electron affinity (i.e., accepts an electron most readily) .

Accepted Answer

A)   H
B)   Li
C)   C
D)   F
E)   NeF) B) and D)
G) B) and C)

Question 12

The most acidic 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 leftF) C) and E)
G) B) and D) A

Question 13

Select the most basic compound from the following:

Accepted Answer

A)   Bi2O3
B)   SiO2
C)   Cs2O
D)   Na2O
E)   H2OF) B) and E)
G) A) and B)

Question 14

Which one of the following equations correctly represents the process involved in the electron affinity of X?

Accepted Answer

A)   X(g)   →\rightarrow→  X+(g)  + e¯
B)   X+(g)   →\rightarrow→  X+(aq) 
C)   X+(g)  + e¯  →\rightarrow→ X(g) 
D)   X(g)  + e¯  →\rightarrow→ X¯(g) 
E)   X+(g)  + Y¯(g)   →\rightarrow→  XY(s)  F) A) and B)
G) C) and D)

Question 15

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 16

Define what is meant by ionization energy, and write a balanced chemical equation to represent the relevant process for element X.

Accepted Answer

Ionization energy is the minim...

Question 17

Bigger atoms generally have smaller ionization energies.

Accepted Answer

A) True 
 B)False

Question 18

Select the element with the least metallic character.

Accepted Answer

A)   Sn
B)   Sr
C)   Tl
D)   Ge
E)   GaF) None of the above
G) All of the above

Question 19

Which of the following elements has the largest first ionization energy?

Accepted Answer

A)   Na
B)   Cl
C)   Ca
D)   Te
E)   BrF) B) and D)
G) A) and B)

Question 20

Which of the following has the most negative electron affinity?

Accepted Answer

A)   H
B)   Li
C)   Na
D)   K
E)   RbF) None of the above
G) A) and D)

Exam 8: Electron Configuration and Chemical Periodicity

Which of the following sets of elements have the [noble gas]ns2np2 valence electron configuration?

Correct AnswerverifiedShow Answer

In neutral atoms, the 3d orbitals have higher energy than the 4s orbitals.

Correct AnswerverifiedShow Answer

Describe how the ionization energies of main group elements vary across a period in the periodic table, using a diagram if necessary.

Correct AnswerverifiedIonization energies generally ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following sublevels is filled last?

Correct AnswerverifiedD

Which of the following atoms will be diamagnetic?

Correct AnswerverifiedShow Answer

Which one of the following statements about orbital energies is incorrect?

Correct AnswerverifiedE

Which of the following elements has the largest atomic size?

Correct AnswerverifiedShow Answer

Which of the following electron configurations is impossible?

Correct AnswerverifiedShow Answer

Select the paramagnetic ion.

Correct AnswerverifiedShow Answer

Select the element with the most negative electron affinity (i.e., accepts an electron most readily) .

Correct AnswerverifiedShow Answer

The most acidic oxides are formed from elements found in the _________________ region of the periodic table.

Correct AnswerverifiedA

Select the most basic compound from the following:

Correct AnswerverifiedShow Answer

Which one of the following equations correctly represents the process involved in the electron affinity of X?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Define what is meant by ionization energy, and write a balanced chemical equation to represent the relevant process for element X.

Correct AnswerverifiedIonization energy is the minim...View AnswerShow Answer

Bigger atoms generally have smaller ionization energies.

Correct AnswerverifiedShow Answer

Select the element with the least metallic character.

Correct AnswerverifiedShow Answer

Which of the following elements has the largest first ionization energy?

Correct AnswerverifiedShow Answer

Which of the following has the most negative electron affinity?

Correct AnswerverifiedShow Answer

Which of the following sets of elements have the [noble gas]ns²np² valence electron configuration?

Correct Answer
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Ionization energies generally ...
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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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Ionization energy is the minim...
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