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Question

BeH2 and MgH2 are prepared using the reagent:

A
LiH
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B
AlH3
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C
LiAlH4
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D
H2
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Solution

The correct options are
C LiAlH4
D H2
Magnesium directly combines with hydrogen to form magnesium hydride.
Mg+H2Heat−−MgH2
Beryllium hydride is prepared by the reaction of beryllium dichloride with lithium aluminum hydride.
2BeCl2+LiAlH42BeH2+LiCl+AlCl3

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