Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An atom containing 19 protons, 20 neutrons and 19 electrons has a mass number
of
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2.
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[Kr] 5s2 4d10 is the electron configuration
for
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3.
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Which of the following is NOT correct?
A) | The proton has a charge of +1 | B) | The neutron has a charge of
+1 | C) | The proton has a relative mass of 1 amu | D) | The electrons has a
relative mass of about 1/1800 amu |
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4.
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What is the correct formula for zinc acetate?
A) | Zn2C2H3O2 | B) | ZnC2H3O2 | C) | Zn(C2H3O2)4 | D) | Zn(C2H3O2)2 |
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5.
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Which of the following is the correct Lewis structure for
SO 2?
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6.
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Which of the following molecules is polar?
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7.
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Which of the following combinations is INCORRECT?
A) | CuO, copper (II) oxide | B) | FeO, iron (II) oxide | C) | CCl4,
carbon (IV) chloride | D) | PbCl4, lead (IV)
chloride |
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8.
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A particular ion has a formula 90Sr2+. The number of
electrons found in one of these ions is
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9.
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Each atom of a specific element has the same
A) | atomic mass | B) | nuclear mass | C) | number of
protons | D) | number of neutrons |
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10.
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The correct formula for a compound between barium and oxygen would be
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11.
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Two isotopes of an element have masses and abundances as follows: 54.00 amu
(20.0%) and 56.00 (80.00%). What is the atomic mass of the element?
A) | 55.00 | B) | 54.20 | C) | 55.60 | D) | 54.40 |
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12.
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The correct formula for iron(III) nitride is
A) | Fe3NO3 | B) | Fe(NO3)3 | C) | Fe3N | D) | FeN |
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13.
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Element X combines with phosphate to form
X3(PO4)2. Element X is
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14.
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The concept that most of an atom’s mass is concentrated in a small nucleus
surrounded by electrons was the contibution of
A) | Thomson | B) | Rutherford | C) | Dalton | D) | Chadwick |
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Completion
Complete each
statement.
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15.
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The correct name for H3PO4 is ___________________
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16.
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The correct formula for barium hydroxide is ______________
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17.
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The correct name for MgCO3 is ________________
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