Coordination Compounds

Short Answer Type

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What is the oxidation state of the metal in the following coordiantion compound?
(i) Ni in Ni(CO)4    (ii) Co in [Co(CO) 4]–

(i) The oxidation state of nickel is zero.

Ni =x
CO=0

therefore oxidation state is 0

(ii) The oxidation state of cobalt is –1.

Co=x
CO=0
anion=+1

x+0=1

Therefore oxidation state is 1.


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