Question

Does the number of lone pairs in a molecule affect the magnitude of hydrogen bonding...? Discuss in relation to `H_2S`, and `PH_3`?

Answer 1

Probably not..........?

Explanation:

`H_2S`, and `PH_3` are real molecules, and for the phosphine, hydrogen-bonding DOES not occur. And for the sulfide, hydrogen-bonding is only marginal. Phosphine is a room temperature gas, and hydrogen sulfide is a little more involatile.