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Which element does not form hydride upon...

Which element does not form hydride upon heating with hydrogen?

A

`Be`

B

`Mg`

C

`Sr`

D

`Ba`

Text Solution

Verified by Experts

The correct Answer is:
A
Except `Be`, all alkaline earth metals form hydrides `(MH_(2))` on directly heating with `H_(2). BeH_(2)` can't be prepared by direct action of `H_(2)` on Be. It is prepared by the action of `LiAIH_(4)` on `BeCI_(2)`.
`2BeCI_(2)+LiAIH_(2) rarr 2BeH_(2)+LiCI +AICI_(3)`
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