Which of the following elements does not form hydride by direct heatin

1.	Which of the following elements does not form hydride by direct heating with dihydrogen ?
Answer» Be Mg Sr Ba SOLUTION :Only `BeH_(2)` cannot be prepared by direct combination with `H_(2)` is GROUP II. It is prepared by REACTING `BeC_(2)` with `LiAlH_(4)`. `2BeCl_(2)+LiAlH_(4)to 2BeH_(2)+LiCl+AlCl_(3)`

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