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Which of the following elements does not form hydride by direct heating with dihydrogen?
(i) Be
(ii) Mg
(iii) Sr
(iv) Ba

Answers (1)

The answer is the option (i) BeH_{2} can be prepared by reacting BeCl_{2} withLiAlH_{4}

2BeCl_{2}+LiAlH_{4}\rightarrow 2BeH_{2}+LiCl+AlCl_{3} .

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