Question

What kind of geometry does `H_2S` have?

Answer 1

It's bent like a water molecule, but with a much sharper bond angle at the sulfur atom than water at its oxygen atom.

Explanation:

Water has a bond angle ofabout 104°, but in hydrogen sulfide the angle is only about 92°. See https://en.wikipedia.org/wiki/Hydrogen_sulfide.

This implies that in hydrogen sulfide we have bonding almost entirely with `p` orbitals. The hybridization we see between the `s` and `p` orbitals on the oxygen in water is almost completely absent in `"H"_2"S"`.