Question 1

Select the element with the least metallic character.

Accepted Answer

A)   Sn
B)   Sr
C)   Tl
D)   Ge
E)   GaF) A) and B)
G) B) and D)

Question 2

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

Accepted Answer

A)   1s21p62s22p6
B)   1s22s22p83s23p4
C)   1s22s22p83s23p2
D)   1s22s22p63s23p4
E)   1s22s22p63s23d4F) B) and E)
G) A) and B) D

Question 3

Select the most basic compound from the following.

Accepted Answer

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

Question 4

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 are correct.F) None of the above
G) B) and D)

Question 5

Electron affinities of neutral atoms may be positive or negative.

Accepted Answer

A) True 
 B)False

Question 6

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.F) A) and E)
G) B) and C)

Question 7

Select the paramagnetic ion.

Accepted Answer

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

Question 8

In Mendeleev's version of the periodic table, the elements were arranged in order of increasing atomic number.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following elements is paramagnetic?

Accepted Answer

A)   Kr
B)   Zn
C)   Sr
D)   V
E)   ArF) A) and E)
G) None of the above

Question 10

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 these choices are correct.F) B) and E)
G) B) and D)

Question 11

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]3s23p3F) A) and B)
G) None of the above

Question 12

Which of the following elements has the largest atomic size?

Accepted Answer

A)   S
B)   Ca
C)   Ba
D)   Po
E)   RnF) D) and E)
G) A) and B) C

Question 13

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 14

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)   36F) A) and B)
G) A) and C)

Question 15

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) None of the above
G) C) and E)

Question 16

Hund's rule is used to predict the electron configuration of atoms in excited states.

Accepted Answer

A) True 
 B)False

Question 17

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 mlF) A) and E)
G) D) and E)

Question 18

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) All of the above

Question 19

Which one of the following oxides does not react with water to form acid solutions?

Accepted Answer

A)   CO2
B)   SO3
C)   BaO
D)   NO2
E)   Cl2O7F) A) and E)
G) C) and D)

Question 20

Select the most acidic compound from the following.

Accepted Answer

A)   SO2
B)   Al2O3
C)   CaO
D)   PbO
E)   H2OF) A) and D)
G) All of the above A

Exam 8: Electron Configuration and Chemical Periodicity

Select the element with the least metallic character.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD

Select the most basic compound from the following.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Electron affinities of neutral atoms may be positive or negative.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Select the paramagnetic ion.

Correct AnswerverifiedShow Answer

In Mendeleev's version of the periodic table, the elements were arranged in order of increasing atomic number.

Correct AnswerverifiedShow Answer

Which of the following elements is paramagnetic?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following elements has the largest atomic size?

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

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.)

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Hund's rule is used to predict the electron configuration of atoms in excited states.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which one of the following oxides does not react with water to form acid solutions?

Correct AnswerverifiedShow Answer

Select the most acidic compound from the following.

Correct AnswerverifiedA

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D

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

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

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C

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

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A