sumit kumar
Last Activity: 11 Years ago
Coordination number is the number atoms or ions which immediately surround the cental atom in a molecule or crystal. It can also be defined as the number of atoms bounded to the same cental atom.
Valency of carbon atom is 4 i.e. it can form 4 covalent bonds with other atoms. This indicated that in most of the organic compouds the coordiation numebr of carbon is 4. For example, In CH4 molecule one C atom forms 4 covalent bonds with 4 hydrogen atoms so its coordination number is 4.