Question

What is the co-ordination number of the metal in $\left\lbrack Co(en)_{2}Cl_{2} \right\rbrack^{+}$.

• A. 4
• B. 5
• C. 6
• D. 3

Answer 1

Answer: (C)

6

Answer 2

In $\lbrack Co(en)_{2}Cl_{2}\rbrack^{+}$

No. of monodentate ligand = 2

No. of bidentate ligand = 2

Co-ordination no. of the metal = 2 + 2(2)= 6.