On heating, all ionic hydrides except $L i H$

melt

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decompose

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evaporate

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Solution

The correct option is B decompose
All ionic hydrides except $L i H$ decompose on heating before reaching their melting points giving metal and hydrogen gas.

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Similar questions

L i H

L i H

H_{2}

M H_{2}

Question 3

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

(a) LiH > NaH > CsH > KH > RbH

(b) LiH < NaH < KH < RbH < CsH

(d) NaH > CsH > RbH > LiH > KH

L i H, N a H, K H, R b H

C s H

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