Answer to Question #158294 in General Chemistry for Christian

Question

For SF2 molecule, draw the Lewis structure; determine molecular shape and electron pair  arrangements

Answer 1

The two lone pairs of electron of SF2 gives it a bent shape. The hybridization by the central Sulfur is SP3. It has two orbitals 180 degrees apart.

S has 6 valence electrons; as it is bonded to two F atoms, you need to add 1 electron for each S-F single bond. The two F atoms, on the other hand, contribute with 7 valence electrons each (plus 1 electron each per each S-F bond).

In other words, there will be 8 electrons around S, which means four electron pairs. The other outer electrons will go around each F atom (3 lone pairs per F atom, that is). In total, 20 electrons in the Lewis structure.

Its shape is bent based on a tetrahedron, the type is AX₂E₂ where A = S, X = F, E = lone pairs around the central atom.