Question

Assertion (A): Oxidation number of "Ni' in Ni (CO), is zero. C)
Reason (R) : In carbonyl group carbons oxidation number is zero.
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Answer 1

Answer:

assertion is wrong as

Ni be x

CO oxidation no.is -1

therefore by substituting these

x-1=0

x=+1

therfore oxidation of n=1 not zero