Super Chemistry - Molecular Shapes and Geometries Cheat Sheet

What is Electron Density/Domain?

The area where electrons can be found around the central atom (atom in the middle)

How many EDs is 1 lone pair?

1 ED

How many EDs is one single bond (-) ?

1 ED

How many EDs is one double bond (=) ?

1 ED

How many EDs is one triple bond (≡) ?

1 ED

Example 1: CS₂

CS₂ - Number of Electron Densities

2

CS₂ - Hybridization

sp

CS₂ - Bonding Regions/Lone Pairs

2/0

CS₂ - Family Name

Linear

CS₂ - Shape Name

Linear

CS₂ - Bond Angle(s)

180°

CS₂ - Drawing

Example 2: BF₃

BF₃ - Number of Electron Densities

3

BF₃ - Hybridization

sp²

BF₃ - Bonding Regions/Lone Pairs

3/0

BF₃ - Family Name

Trigonal Planar

BF₃ - Shape Name

Trigonal Planar

BF₃ - Bond Angle(s)

120°

BF₃ - Drawing

What happens if the # of EDs and # of Bonding Regions is the same?

The Family Name and Shape Name will be the same

Example 3: SO₂

SO₂ - Number of Electron Densities

3 EDs

SO₂ - Hybridization

sp²