Which of the following complex has highest EAN value?

Options

A. `[Fe(CO)_5]`
B. `[Ti(sigma - C_2 H_5)_2 (pi -C_5 H_5)_2]`
C. `[Ni (en)_3]Cl_2`
D. `[Mn(C_2O_4)_3]^(3-)`

Answer

C

Explanation

EAN of all above complex are as follows:
a) `[Fe(CO)_5 : 26 - 0 + 5 xx 2 = 36 ` B) `[Ti (sigma - C_2H_5)_2], 22 - 4 + 4 + 12 = 34`
C) `[Ni(en)_3 Cl_2 , 28 - 2 + 3 (2 xx 2) = 38 ` D) `[Mn(C_2O_4)_3]^(3-) , 25 - 3 + 3 xx 2 xx 2 = 34`