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All the group 2 elements exceptcombine w...

All the group 2 elements except___combine with dihydrogen upon heating to form their hydrides,`MH_(2)`.

A

Mg

B

Be

C

Ca

D

Sr

Text Solution

Verified by Experts

The correct Answer is:
B
`BeH_(2)` is prepared by the raction of `BeCl_(2)` with `LiAlH_(4)`
`2BeCl_(2)+LiAlH_(4)to2BeH_(2)+LiCl+AlCl_(3)`
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