(D) $1$. $PH_3$ is a stronger reducing agent than $NH_3$ because the $E-H$ bond dissociation enthalpy decreases down the group $(N-H > P-H)$.$2$. $NH_

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$PH_3$ is a stronger reducing agent than $NH_3$ and it has a lower critical temperature than $NH_3$.

(D) $1$. $PH_3$ is a stronger reducing agent than $NH_3$ because the $E-H$ bond dissociation enthalpy decreases down the group $(N-H > P-H)$.$2$. $NH_3$ exhibits intermolecular hydrogen bonding,whereas $PH_3$ only has weak van der Waals forces. Consequently,$PH_3$ has a lower critical temperature than $NH_3$.

Class 12 Chemistry p-Block Elements (Class 12)Nitrogen family

Which of the following statements is true?

A
$NH_3$ is less soluble than $PH_3$ in water.
B
$NH_3$ is a stronger base and a stronger reducing agent than $PH_3$.
C
$NH_3$ has a higher boiling point than $PH_3$ and a lower melting point than $PH_3$.
D
$PH_3$ is a stronger reducing agent than $NH_3$ and it has a lower critical temperature than $NH_3$.