Which of the following orders regarding the m | vedclass

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(C) The melting points of group $15$ hydrides generally increase down the group due to an increase in molecular mass and van der Waals forces. However

Vedclass · Accepted Answer

$NH_3 > PH_3 < AsH_3$

Vedclass · Answer

(C) The melting points of group $15$ hydrides generally increase down the group due to an increase in molecular mass and van der Waals forces. However,$NH_3$ has an anomalously high melting point due to the presence of intermolecular hydrogen bonding. The correct order of melting points for group $15$ hydrides is $PH_3 Comparing the given options,$NH_3$ has the highest melting point,and $PH_3$ has a lower melting point than $AsH_3$. Thus,the order $PH_3  AsH_3 > PH_3$,which implies $NH_3 > PH_3$ and $AsH_3 > PH_3$. Looking at the options,option $C$ represents the correct relative trend $NH_3 > PH_3$ and $AsH_3 > PH_3$.

Which of the following orders regarding the melting points of hydrides of group $15$ is correct?

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