Which one of the molecules below has 10 electrons around the central atom in a Lewis structure that has all atoms with a formal charge of zero?

I.POCl₃
II. PF₃
III. SO₃
IV. SOF₂

Question

Which one of the molecules below has 10 electrons around the central atom in a Lewis structure that has all atoms with a formal charge of zero? I.POCl₃ II. PF₃ III. SO₃ IV. SOF₂

Quizplus · Accepted Answer

I (POCl) and IV (SOF) both have 10 electrons around the central atom with all atoms having a formal charge of zero. In POCl, phosphorus (P) has 5 valence electrons, and with one double bond to oxygen (O) and single bonds to chlorine (Cl) and sulfur (S), it achieves 10 electrons around it. In SOF, sulfur (S) has 6 valence electrons, and with one double bond to oxygen (O) and a single bond to fluorine (F), it also achieves 10 electrons around it.

Which One of the Molecules Below Has 10 Electrons Around