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Question
Amongst the following identify the species with an atom in + 6 oxidation state:
Options:
A .  MnO−4
B .  Cr(CN)3−6
C .  NiF2−6
D .  CrO2Cl2
Answer: Option D
:
D
In MnO4, Mn is in +7 oxidation state.
Likewise, inCr(CN)36 Chromium exhibits +3 oxidation state.
As forNiF26, Nickel shows +4oxidation state.
What will be the oxidation number of Cr in CrO2Cl2?
We apply the rules for assigning oxidation number:
x42=0
Solving,x=+6

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