What is the oxidation number of chromium in the ionic compound ammonium dichromate, (NH4) 2Cr2O7?
A) +3
B) +4
C) +5
D) +6
E) +7
Correct Answer:
Verified
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Q6: Oxidation is the _
A)gain of electrons.
B)loss of
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Q9: Reduction refers to _
A)a decrease in oxidation
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