Question

Determine the coordination number of the metal ion in [co(nh3)3cl3]−.

Answer 1

coordination number depends on the no. of ligands attach to the central metal in the coordination sphere. so, 6 is correct answer hope it helps you, comment if any query.

Answer 2

Answer : The coordination number of the metal ion in $[Co(NH_3)_3Cl_3]^-$ is, six (6)

Explanation :

Coordination number : Coordination number of an atom is determined by counting the number of ligands or other atoms to which it is bonded. Or we can say that the number of donor atoms are attached to the central metal ion.

In the given complex, 'Co' is the cobalt metal, $NH_3$ and 'Cl' are the ligands. In this complex, three ammonia ligands and three chlorine ligands are bonded to the cobalt metal ion.

The total number of bonded atoms are = 3 + 3 = 6

Hence, the coordination number of metal ion is, six (6)