Question

I thought answer should be +6 but in answer key the answer given was zero why??​

Answer 1

Answer + Explaination

FOR A WHILE ,

Let us assume that the oxidation state of chromium is x.

Now ,

cr = x

O = 6

Hence ,

x + 6 × 0

X = 0

Therefore the oxidation state of chromium is zero.

Moreover ,

As we know that the complex is homoleptical in nature and as you can see all the lighads present there are similar to each other hence purely identical in nature.

Answer 2

Oxidation number of CO =0

Therefore,

The Oxidation number of Cr in Cr(CO)6

x+6(0)=0

Or

x=0