Question

Determine the number of bonding groups for H2S. n = SubmitMy AnswersGive Up Part F Determine the number of lone pairs around the central atom for H2S. n = SubmitMy AnswersGive Up Part G Determine the number of bonding groups for PCl3. n = SubmitMy AnswersGive Up Part H Determine the number of lone pairs around the central atom for PCl3. n = SubmitMy AnswersGive Up

Answer 1

1) H₂S

Sulphur (S) is the central metal atom. It has 6 valence electrons. It shares two of its electrons with 1 valence electron of each H atom. Thus, it has the following structure:

So, H₂S has two bonding groups and the central metal atom S has two lone pairs of electrons.

2) PCl₃

Here, P is the central metal atom with 5 valence electrons. It will share 3 of its electrons with the three Cl atoms. Each Cl atom has 7 valence electrons. So, it can share only one electron. Thus, the structure of PCl₃ will be:

So, PCl₃ will have 3 bonding groups and the central metal atom P has 1 lone pair of electrons.