Correct statements among the following areA) BeH2 cannot be prepared directly from its constituent elements.B) BeF2 cannot be conveniently prepared from its constituent elements.C) On long standing, solution of magnesium in liquid NH3 forms MgNH22

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A, B, C

A, B only

A, C only

B, C only

answer is B.

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Detailed Solution

A2BeCl2+LiAlH4→2BeH2+LiCl+AlCl3BNH42BeF4→ΔBeF2+2NH3+2HFCOne long standing, solution of magnisium in liquid NH3 forms MgNH36+2

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