Question

The coordination number of Co in \([Co(NH_3)_4Cl_2]Cl\) is

• A. 2
• B. 3
• C. 4
• D. 6

Hint:

Coordination number is the number of donor atoms directly attached to the metal center.

Answer 1

The Correct Option is D

Step 1: The coordination number is determined by counting the number of ligands directly attached to the central metal atom. 

Step 2: In \([Co(NH_3)_4Cl_2]Cl\), cobalt is surrounded by four \( NH_3 \) ligands and two \( Cl^- \) ligands, making a total coordination number of 6.