Which one of the following compounds is chromium(III) oxide?
A) Cr2O3
B) CrO3
C) Cr3O2
D) Cr3O
E) Cr2O4
Correct Answer:
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Q83: Which species below is the nitride ion?
A)Na+
B)NO3-
C)NO2-
D)NH4+
E)N3-
Q86: Which one of the following is the
Q89: The formula for the compound formed between
Q90: Which metal does not form cations of
Q94: Which one of the following polyatomic ions
Q95: The proper formula for the hydronium ion
Q95: A correct name for Fe(NO3)2 is _.
A)iron
Q97: The correct name for HNO2 is _.
A)nitrous
Q114: The nucleus of an atom contains _.
A)electrons
B)protons,
Q115: Horizontal rows of the periodic table are
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