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The oxidation number of cobalt in K[Co(CO)4] is (i) +1 (ii) +3 (iii) –1 (iv) –3

The oxidation number of cobalt in K[Co(CO)4] is (i) +1 (ii) +3 (iii) –1 (iv) –3

Grade:9

2 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
The oxidation number of cobalt in K[Co(CO)4] is
[Co(CO)4]^-1
the oxidation state of CO is 0 .
therefore its oxidation number is x + 4*0 =-1
x=-1

Muhammad Taha
11 Points
6 years ago
Oxidation state is Metal + Ligand=Remaining charge X +0 =-1 so X=Metal=-1 NOTE: oxidation state of (co) is zero.

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