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  4. When an alkali metal is reacted with hydrogen then metallic hydride is formed. In this reaction

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Q. When an alkali metal is reacted with hydrogen then metallic hydride is formed. In this reaction

Redox Reactions

Solution:

$2M + H^0_2 \to 2M^{+1}H^{-1}$
$\therefore H_2^0 \to H^{-1}$ (Reduction)