Question

Show the formation of the following molecule:

Hydrogen sulfide H₂S

Answer 1

Hydrogen has 1 valence electron and needs 1 more to complete its duplet. Sulfur has the electronic configuration $2,8,6$ (6 valence electrons) and needs 2 more electrons to complete its octet. Each of the two hydrogen atoms shares one electron with the sulfur atom, forming two single covalent bonds ($\text{H}-\text{S}-\text{H}$), leaving two lone pairs on the sulfur atom.