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Metal hydrides are ionic, covalent or mo...

Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH the correct order of increasing ionic character is

A

`LiH gt NaH gt CsH gt KH gt RbH`

B

`LiH lt NaH lt KH lt RbH lt CsH`

C

`RbH gt CsH gt NaH gt KH gt LiH`

D

`NaH gt CsH gt RbH gt LiH gt KH`

Text Solution

Verified by Experts

The correct Answer is:
B
Metal hydrides are ionic, covalent or molecular in nature. Ionic character increases as the size of the atom increases or the electronegativity of the atom decreases.
The correct order of increasing ionic character is `LiH lt NaH lt KH lt RbH lt CsH .`
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