Discuss the three types of Covalent hydrides

Explanation

Covalent (Molecular) hydrides :
They are compounds in which hydrogen is attached to another element by sharing of electrons.
Covalent hydrides are further divided into three categories, viz.,
electron precise `(CH_4,C_2H_6,SiH_4,GeH_4)`
electron-deficient `(B_2H_6)` and
electron-rich `(NH_3,H_2O)`
Since most of the covalent hydrides consist of discrete, small molecules that have relatively weak intermolecular forces, they are generally gases or volatile liquids.