Why does NH3 form hydrogen bond but PH3 does not? – InterviewSolution

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1.

Why does NH3 form hydrogen bond but PH3 does not?

Answer»

In NH₃,the nitrogen atom forms hydrogen bond because of the following reasons :

Small size of nitrogen
High electronegativity (3.0) of nitrogen

N-H bond is polar forming hydrogen bond.

P-H bond is almost purely covalent due to larger size and lesser electronegativity.

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