Molecular Geometry for Lewis Structures

Linear

#atoms on central atom- 2

#lone pairs on central atom- 0-3

ideal bond angles- 180 degrees

non-polar

Trigonal Planar

#atoms on central atom- 3

no lone pairs

ideal bond angles- 120

non-polar

Tetrahedral

#atoms on central atom- 4

no lone pairs

ideal bond angles- 109.5

non-polar

Trigonal bipyramidal

#atoms on central atom- 5

no lone pairs

non-polar

Octahedral

#atoms on central atom- 6

non-polar

Pyramid

#atoms on central atom- 3

#lone pairs on central atom- 1

polar

Bent

#atoms on central atom- 2

#lone pairs on central atom- 1 or 2

ideal bond angles- 120

polar

Seesaw

#atoms on central atom- 4

#lone pairs on central atom- 1

polar

T-shape

#atoms on central atom- 3

#lone pairs on central atom- 2

polar

Square Pyramid

#atoms on central atom- 5

#lone pairs on central atom- 1

polar

Square Planar

#atoms on central atom- 4

#lone pairs on central atom- 2

nonpolar