3D geometries

Total # of electron groups

# of bonding groups 

# of lone pairs

Electron geometry + bond angle

Molecular geometry + bond angle

2

2

0

Linear 180°

Linear 180°

3

3

0

Trigonal planar 120°

Trigonal planar 120°

3

2

1

Trigonal planar 120°

Bent 117°

4

4

0

Tetrahedral 109.5°

Tetrahedral 109.5°

4

3

1

Tetrahedral 109.5°

Trigonal pyramidal 107°

4

2

2

Tetrahedral 109.5°

Bent 104.5°