. Explain why inspite of nearly the same electronegativity, nitrogen forms hydrogen bonding while chlorine does not


Best Answer

Electronegativity of both nitrogen (N) as well as chlorine (Cl) is 3.0. But only nitrogen forms hydrogen bonding not chlorine. The reason is that chlorine (atomic radius = 70 pm) is less as compared to chlorine (atomic radius = 99 pm). Therefore, N can cause greater polarization of N - H bond than Cl in case of Cl - H bond. Hence, N atom is involved in hydrogen bonding and not chlorine.

 

 

 

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