A group 15 element,which is a metal and forms | vedclass

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(D) In group $15$ $(N, P, As, Sb, Bi)$,the metallic character increases down the group. $Bi$ is the most metallic element in this group. The reducing

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$Bi$

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(D) In group $15$ $(N, P, As, Sb, Bi)$,the metallic character increases down the group. $Bi$ is the most metallic element in this group. The reducing power of hydrides $(MH_3)$ increases down the group from $NH_3$ to $BiH_3$ because the $M-H$ bond dissociation enthalpy decreases as the size of the central atom increases. Therefore,$BiH_3$ is the strongest reducing agent among the group $15$ hydrides,and the element is $Bi$.

$A$ group $15$ element,which is a metal and forms a hydride with the strongest reducing power among group $15$ hydrides. The element is:

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