Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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What
is the expected number of valence electrons for an atom of a group 6A element?
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2.
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Which
combination of atoms is most likely to produce a compound with ionic bonds? a. | Al and
F | b. | P and
H | c. | C and
O | d. | Si and
O | e. | S and
Br | | |
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3.
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Which
of the following compounds is expected to have the strongest ionic bonds? a. | RbF | b. | NaF | c. | NaI | d. | CsBr | e. | CsI | | |
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4.
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Which
of the following compounds is expected to have the strongest ionic bonds? a. | MgO | b. | KBr | c. | NaI | d. | SrO | e. | CaS | | |
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5.
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What
is the total number of valence electrons in a carbon dioxide molecule?
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6.
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What
is the total number of valence electrons in a carbonate ion?
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7.
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How
many lone-pair electrons are on the carbon atom in CO2?
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8.
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Which
of the following species will have a Lewis structure most like that of carbon disulfide,
CS2? a. | NO2- | b. | SO2 | c. | H2S | d. | SF2 | e. | SCN- | | |
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9.
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Which
of the following is a correct Lewis structure for ozone, O3?
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10.
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Which
of the following is a correct Lewis structure for N2O?
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11.
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Which
of the following are possible Lewis structures for
C2H6O?
a. | 1 | b. | 2 | c. | 3 | d. | 2 and 3 | e. | 1, 2, and
3 | | |
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12.
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Which
of the following are resonance structures for sulfur dioxide,
SO2?
a. | 1 and
2 | b. | 2 and
4 | c. | 3 and
4 | d. | 1, 2, and
3 | e. | 2, 3, and
4 | | |
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13.
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Which
of the following are resonance structures for the formate ion,
HCO2-?
a. | 1 and
2 | b. | 2 and
3 | c. | 3 and
4 | d. | 1, 3, and
4 | e. | 2, 3, and
4 | | |
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14.
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How
many resonance structures can be drawn for the thiocyanate ion, SCN-? The carbon atom is
in the center of this ion.
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15.
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Which
of the following elements is most likely to form a molecular structure that disobeys the octet
rule?
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16.
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When
both of the electrons in a molecular bond originate from the same atom, the bond is called
a(n) a. | double
bond. | b. | coordinate covalent bond. | c. | pi
bond. | d. | sigma bond. | e. | ionic
bond. | | |
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17.
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Use
VSEPR theory to predict the molecular geometry of CS2. a. | linear | b. | bent | c. | trigonal-planar | d. | tetrahedral | e. | octahedral | | |
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18.
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Use
VSEPR theory to predict the molecular geometry of CO32-. a. | bent | b. | tetrahedral | c. | trigonal-pyramidal | d. | T-shaped | e. | trigonal-planar | | |
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19.
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What
are the bond angles in ClO4-? a. | 90° | b. | 109.5° | c. | 120° | d. | 180° | e. | 90° and 180° | | |
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20.
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Predict which of the following compounds will have the most polar covalent
bond(s). a. | HF | b. | CBr4 | c. | H2S | d. | NCl3 | e. | HI | | |
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