Among NH_3,PH_3,AsH_3,and SbH_3,which one is | vedclass

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(D) $SbH_3$ is the strongest reducing agent among the given hydrides. As we move down the group from $N$ to $Sb$,the atomic size of the central atom i

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$SbH_3$

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(D) $SbH_3$ is the strongest reducing agent among the given hydrides. As we move down the group from $N$ to $Sb$,the atomic size of the central atom increases,which leads to a decrease in the $M-H$ bond dissociation enthalpy. Since the $Sb-H$ bond is the weakest,it can easily release $H$ atoms (or $H_2$ gas),thereby acting as the strongest reducing agent.

Among $NH_3$,$PH_3$,$AsH_3$,and $SbH_3$,which one is a stronger reducing agent?

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