Write in the number of lone pairs or atoms to complete each description below. a molecule that has a trigonal-planar shape has lone pairs a molecule that has a bent shape and a trigonal-planar electron domain shape has lone pairs. a molecule that has a trigonal-pyramidal shape has ato ms and lone pair around the central atom.

1. A molecule with a trigonal-planar shape has no lone pairs on the central atom.

An example is BF₃ (see Figure 1).

2. A molecule with a bent shape and a trigonal-planar electron domain shape has one lone pair on the central atom.

An example is SO₂ (see Figure 2).

3. A molecule that has a trigonal-pyramidal shape has three atoms and one lone pair around the central atom.

An example is NH₃ (see Figure 3).

they are all solids.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.