Question

Explain co-ordination number by giving an example.

Hint:

Co-ordination number depends on the number of donor atoms attached to the central metal ion.

Answer 1

The co-ordination number is the number of ligand atoms directly bonded to the central atom in a coordination compound. Example: \[ [Co(NH_3)_6]^{3+}, \] where the co-ordination number of cobalt is 6.