9.14 Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?

Answers (1)
R Rakesh

Answer-

The strength of hydrogen bonding depends on the electronegativity of an atom

electronegativity order N<O<F

The expected order should be NH_{3}<H_{2}O<HF

But the  actual order is NH_{3}<HF<H_{2}O

This is because of the extent of H bonding in a water molecule is more due to the presence of one extra hydrogen atom. Also, Oxygen atom forms a huge ring like structure through its high ability of hydrogen bonding

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