Transition metals form number of interstitial compounds. Explain.

Explanation

Interstitial compounds are those which formed when small atoms like H, C or N are trapped inside the crystal lattice of metals. They are generally non stoichiometric and are neither typically ionic nor covalent. For example Tic, Mn, N etc. Transition metals form a large number of Interstitial compound because small atoms of certain non-metallic elements (H, B, C, N etc.) get trapped in voids of lattice of the transition metal atoms. As a result of filling up of the Interstitial spaces such Interstitial compounds are hard and rigid.