Question

How many metal-metal bonds are present in [CO2(co)8]​

Answer 1

Answer:

Two metallic bonds are present.

Answer 2

Given:

The given complex is $[Co_2(CO)_8]$.

To find:

We have to find the number of metal-metal bonds.

Solution:

The complex is $[Co_2(CO)_8]$

The valance electron of Co is 9 and the valance electrons of CO are 2.

Thus total valance electrons of the complex are given as-

2×9+8×2=34.

According to the 18 electron rule, a total number of electrons is given as 18×2=36.

So, the number of metal-metal bonds will be-

$\frac{36 - 34}{2} \\ = 1$

Thus 1 metal-metal bond is present in $[Co_2(CO)_8]$.