Question

Explain the following with suitable example:
(a) Electron deficient hydrides
(b) Ionic hydrides

Answer 1

Your Answer:

a) Electron deficient hydrides:

" Hydrides having lesser electrons to form normal covalent bonds are called electron deficient hydrides."

Example:

BH3 , AlH3 , etc.

b) Ionic Hydrides:

" The second category of hydrides is ionic hydrides ( also known as saline hydrides or pseudohalides ) . These compounds form between Hydrogen and most active Metals , especially with alkali and alkaline-earth metals of group one and two elements..... They bond with more electropositive metal atoms ."

Example:

LiH , NaH , HCl , etc.

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