Question

Coordination number of Cr in Na3[Cr(C2O4)3]is

Answer 1

Coordination number of Cr is +3

Explanation:

We have given complex $Na_3[Cr(C_2O_4)_3]$

We have to find the coordination number of Cr

In simple words coordination number is the total number of others atoms bounded to atoms for which we have to find the coordination number.

Here we have to find the coordination number of Cr

So we have to calculate the number of others atom bounded by Cr

Le the coordination number of Cr is x

So $3\times 1+x+3\times -2=0$ ( As coordination number of Na is 1 and coordination number of $C_2O_4$ is -2 )

x - 3 = 0

x = 3

So coordination number of Cr is +3

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Answer 2

and the answer is +3 hoga