A) it is less poisonous than \[N{{H}_{3}}\]
B) it is less basic than \[N{{H}_{3}}\]
C) electronegativity of \[P{{H}_{3}}\]is >\[N{{H}_{3}}\]
D) it does not show reducing properties.
Correct Answer: B
Solution :
Nitrogen is more electronegative than the phosphorus atom. In \[N{{H}_{3}}\], nitrogen attracts the bonded pair of electron between N and H atoms towards it, and this effect is more in \[N{{H}_{3}}\] than in \[P{{H}_{3}}\]. Due to this effect, the lone pair of electrons in \[N{{H}_{3}}\] can participate more than that of \[P{{H}_{3}}\].
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