The correct decreasing order of basicity of h | vedclass

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(D) The basicity of group-$15$ hydrides depends on the availability of the lone pair of electrons on the central atom for donation. As we move down th

Vedclass · Accepted Answer

$NH_3 > PH_3 > AsH_3 > SbH_3$

Vedclass · Answer

(D) The basicity of group-$15$ hydrides depends on the availability of the lone pair of electrons on the central atom for donation. As we move down the group from $N$ to $Bi$,the size of the central atom increases. This leads to the dispersion of the lone pair over a larger volume,making it less available for donation. Therefore,the basicity decreases down the group. The correct decreasing order is $NH_3 > PH_3 > AsH_3 > SbH_3$.

The correct decreasing order of basicity of hydrides of group-$15$ elements is

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