VESPR Theory

EG- Linear MG- Linear

2 regions, 180 angle, 0 lone pairs

EG- trigonal planar, MG- trigonal planar

3 regions, 120 angle, 0 lone pairs

EG- Trigonal planar, MG- Bent/ V shaped

3 regions, <120 angle, 1 lone pair

EG- tetrahedral, MG- Tetrahedral

4 regions, 109.5 angle, 0 lone pairs

EG- tetrahedral, MG- Trigonal pyramidal

4 regions, <109.5 angle, 1 lone pair

EG- Tetrahedral, MG- Bent/ V shaped

4 regions, <109.5, 2 lone pairs

EG- Trigonal Bipyramidal, MG- Trigonal Bipyramidal

5 regions, 90 and 120, 0 lone pairs

EG- trigonal bipyramidal, MG- Seesaw

5 regions, 90 and <120, 1 lone pair

EG- trigonal Bipyramidal, MG- T shaped

5 regions, 90 and 180, 2 lone pairs

EG- trigonal Bipyramidal, MG-linear

5 regions, 180, 3 lone pairs

EG- Octahedral, MG- Octahedral

6 regions, 90, 0 lone pairs

EG- Octahedral, MG- Square Pyramidal

6 regions, 90, 1 lone pairs

EG- octahedral, MG-square planar

6 regions, 90 degree angle, 2 lone pairs

EG- Octahedral, MG- T shaped

6 regions, 90 and 180, 3 lone pairs

EG- Octahedral, MG- Linear

6 regions, 180, 4 lone pairs

What is this?

Linear

What is this?

Trigonal Planar

What is this?

Bent (V-shaped)

What is this?

tetrahedral

What is this?

Trigonal Pyramidal

What is this?

Trigonal Bipyramidal

What is this?

Seesaw

What is this?

T-shaped

What is this?

Octahedral

What is this?

Square Pyramidal

What is this?

square planar

Electronic Geometry

Looks at all pairs of electrons, lone pairs and those involved in bonding

Molecular Geometry

Only looks at pairs of electrons involved in bonding, does NOT include lone pairs

The more lone pairs

the smaller the bond angles will be