[BHU 2003]
A) $ Ni{{(CO)}_4} $ has oxidation number + 4 for Ni
B) $ Ni{{(CO)}_4} $ has zero oxidation number for Ni
C) Ni is metal
D) CO is gas
Correct Answer: A
$ Ni,{{(CO)}_4} $ has O.N.
zero for $ Ni $ .
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