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The formula for chromium (II) iodide is CrI2.

A) True
B) False

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200 pm is the same as Å.


A) 2
B) 2000
C) 20
D) 200
E) 2 × 10- 12

F) C) and D)
G) A) and E)

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Lithium is a and magnesium is a .


A) metal, metalloid
B) nonmetal, metal
C) nonmetal, nonmetal
D) metalloid, metalloid
E) metal, metal

F) C) and D)
G) C) and E)

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Gravitational forces act between objects in proportion to their


A) charges
B) masses
C) volumes
D) densities
E) polarizability

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

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Which pair of substances could be used to illustrate the law of multiple proportions?


A) CO, CO2
B) SO2, H2SO4
C) NaCl, KCl
D) CH4, C6H12O6
E) H2O, O2

F) None of the above
G) D) and E)

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The correct name for SrO is .


A) strontium monoxide
B) strontium dioxide
C) strontium peroxide
D) strontium hydroxide
E) strontium oxide

F) D) and E)
G) B) and D)

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Oxygen is a _ and nitrogen is a _.


A) nonmetal, metalloid
B) metal, metalloid
C) metalloid, metalloid
D) nonmetal, nonmetal
E) nonmetal, metal

F) C) and D)
G) A) and D)

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The name of the ionic compound NH4CN is _ .


A) cyanonitride
B) nitrogen hydrogen cyanate
C) ammonium cyanide
D) ammonium hydrogen cyanate
E) ammonium carbonitride

F) D) and E)
G) C) and E)

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Which species has 54 electrons?


A) Which species has 54 electrons? A) B) C) D) E)
B) Which species has 54 electrons? A) B) C) D) E)
C) Which species has 54 electrons? A) B) C) D) E)
D) Which species has 54 electrons? A) B) C) D) E)
E) Which species has 54 electrons? A) B) C) D) E)

F) B) and D)
G) D) and E)

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The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu. The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu. A) 219.7 B) 221.0 C) 220.4 D) 22042 E) 218.5


A) 219.7
B) 221.0
C) 220.4
D) 22042
E) 218.5

F) C) and D)
G) B) and E)

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Silver has two naturally occurring isotopes with the following isotopic masses: Silver has two naturally occurring isotopes with the following isotopic masses: The average atomic mass of silver is 107.8682 amu. The fractional abundance of the lighter of the two isotopes is . A) 0.7578 B) 0.9047 C) 0.5184 D) 0.2422 E) 0.4816 The average atomic mass of silver is 107.8682 amu. The fractional abundance of the lighter of the two isotopes is .


A) 0.7578
B) 0.9047
C) 0.5184
D) 0.2422
E) 0.4816

F) D) and E)
G) B) and D)

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Which atom has the smallest number of neutrons?


A) oxygen- 16
B) neon- 20
C) carbon- 14
D) fluorine- 19
E) nitrogen- 14

F) A) and D)
G) B) and D)

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What is the formula of the compound formed between strontium ions and nitrogen ions?


A) Sr2N3
B) SrN3
C) SrN2
D) SrN
E) Sr3N2

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

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The mass number of an atom of 118Xe is _ .


A) 64
B) 118
C) 110
D) 172
E) 54

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

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Potassium is a _ and chlorine is a .


A) nonmetal, metal
B) metal, metalloid
C) metalloid, nonmetal
D) metal, nonmetal
E) metal, metal

F) A) and B)
G) All of the above

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An atom of 17O contains protons.


A) 17
B) 11
C) 9
D) 25
E) 8

F) A) and C)
G) C) and D)

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The name of the ionic compound (NH4) 3PO4 is _ .


A) tetrammonium phosphate
B) ammonia phosphide
C) triammonium phosphate
D) nitrogen hydrogen phosphate
E) ammonium phosphate

F) C) and E)
G) B) and E)

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In the symbol below, X = In the symbol below, X = A) C B) N C) K D) Al E) not enough information to determine


A) C
B) N
C) K
D) Al
E) not enough information to determine

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

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Which one of the following is not true concerning cathode rays?


A) They impart a negative charge to metals exposed to them.
B) They originate from the negative electrode.
C) They are made up of electrons.
D) The characteristics of cathode rays depend on the material from which they are emitted.
E) They travel in straight lines in the absence of electric or magnetic fields.

F) B) and D)
G) A) and D)

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The suffix - ide is used .


A) for monatomic anion names
B) for monoatomic cations
C) for polyatomic cation names
D) for the name of the first element in a molecular compound
E) to indicate binary acids

F) B) and E)
G) A) and B)

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Showing 21 - 40 of 201

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