1.

The oxidation state of nickel in NI(Co)4 is

Answer»

on number is the charge left on the central atom when all the BONDING pairs of electrons are REMOVED, with the charge devolved to the most electronegative atom. For Ni(CO)4, we break the Ni−CO bond and we get Ni0+4×−:C≡O+. And thus nickel has a formal oxidation state of ZERO.



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