Question

What is meant by hydrogen occupying interstitial sites?(Interstitial hydrides)

Answer 1

1. In the compounds where hydrogen occupies interstitial positions are called as interstitial hydrides.

2. In such compounds.H being small in size is trapped inside the metal crystal lattice. They are usually non- stoichiometric
And neither typically ionic or covalent. For e.g, TiH_1.7 , VH_0.56 etc .