Explain Ionic Hydrides (Saline Hydrides) covalent (molecular hydrides), Metal (hydrides) or (non stoichiometric hydrides) by Examples.

Explain Ionic Hydrides (Saline Hydrides) covalent (molecular hydrides)

1.	Explain Ionic Hydrides (Saline Hydrides) covalent (molecular hydrides), Metal (hydrides) or (non stoichiometric hydrides) by Examples.
Answer» Solution :Dihydrogen, under certain reaction CONDITIONS, combines with almost all elements, except NOBLE GASES, to form binary compounds, CALLED hydrides. If .E. is the symbol of an element then hydride can be expressed as `EH_X` (e.g., `MgH_2`) or `E_mH_n` (e.g., `B_2H_6`). The hydrides are classified into three CATEGORIES: (i) Ionic or saline or saltlike hydrides (ii) Covalent or molecular hydrides (iii) Metallic or non-stoichiometric hydrides