Oxidation Numbers: Question Preview (ID: 14558)


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What is the oxidation number of Chlorine in HClO4?
a) +1 b) +5 c) +3 d) +7
The number of nitrogen in N2 is
a) +1 b) 0 c) +3 d) -3
What is the oxidation number of Pt in K2PtCl6?
a) -2 b) +2 c) -4 d) +4
What is the oxidation number of sulfur in H2SO4?
a) 0 b) -2 c) +6 d) +4
What is the oxidation number of nitrogen in (NO3)-1
a) +1 b) +3 c) +5 d) -5
The oxidation number of nitrogen in N2O is
a) +1 b) +2 c) -1 d) -2
The oxidation number of manganese in KMnO4 is
a) +1 b) +7 c) +3 d) +4
Oxygen has an oxidation number of -2 in
a) O2 b) NO2 c) Na2O2 d) OF2
What is the sum of the oxidation numbers in CO2?
a) 0 b) -2 c) -4 d) +4
What is the oxidation number of Cr in the dichromate ion (Cr2O7)-2
a) +1 b) +3 c) +5 d) +6
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