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A hydride of 2^(nd) period alkali met...

A hydride of `2^(nd)` period alkali metal (A ) on reaction with compound of Boron (B ) to give a reducing agent (c ) I dentify A, B and C.

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(i) A hydride of `2^(nd)` period alkali metal (A) is linthium hydride (LiH)
(ii) Lithium hydride (A) reacts with diborane (B) to give lithiumborohydride (c ) which act at reducing agent.
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