Metal hydrides are ionic, covalent or molecular in nature. Among … - Vidyadip

MCQ

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 > NaH > CsH > KH > RbH
✓
LiH < NaH < KH < RbH < CsH
C
RbH > CsH > NaH > KH > LiH
D
NaH > CsH > RbH > LiH > KH

✓

Answer

Correct option: B.

LiH < NaH < KH < RbH < CsH

LiH < NaH < KH < RbH < CsH

Explanation:

In ionic hydride as it is formed by s-Block element, down the group, electropositive character increases.

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