B. SF4 Sulfur has an expanded octet in this compound (because it can access d orbitals), thus violating the octet rule. In addition to the four florines, it also has two lone pairs, so a total of 12 electrons. Solution B. SF4 Sulfur has an expanded octet in this compound (because it can access d orbitals), thus violating the octet rule. In addition to the four florines, it also has two lone pairs, so a total of 12 electrons..