The sum of coordination number and oxidation number of the metal M in the complex `[M(en)_(2) (C_(2)O_(4))]CI` (where en is ethylenediamine) is:

Options

A. 9
B. 6
C. 7
D. 8

Answer

B

Explanation

Given complex compound is ` [M(en)_2(C_2O_4)]Cl`
Let oxidation number of Mis x .
`therefore x-2-2=-3`
Now, as coordmation number is defined as the total number of binding sites attached to the metal. Hence, in the given complex coordination number is 6.