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. 7
B. 8
C. 9
D. 6

Answer

C

Explanation

`[M(en)_(2)(C_(2)O_(4))]Cl`
x+0-2-2-1=0
x=+2+1
x=+3
en, and `C_(2)O_(4)^(2-)` are bidentate ligand.

Coordination no=6
sum of coordination no and oxidation no.
6+3=9