The oxidation number of hydrogen in MH_2 is | vedclass

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(B) In $MH_2$,$M$ represents an alkaline earth metal (Group $2$ element). Since the metal $M$ is in its $+2$ oxidation state,the sum of oxidation numb

Vedclass · Accepted Answer

$-1$

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(B) In $MH_2$,$M$ represents an alkaline earth metal (Group $2$ element). Since the metal $M$ is in its $+2$ oxidation state,the sum of oxidation numbers must be zero. Let the oxidation number of $H$ be $x$. $1 	imes (+2) + 2 	imes (x) = 0$ $2 + 2x = 0$ $2x = -2$ $x = -1$. Therefore,hydrogen in metal hydrides like $MH_2$ exhibits a $-1$ oxidation state.

The oxidation number of hydrogen in $MH_2$ is

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