VESPR Shapes

Steric number 2

Number of lone pairs = 0

• electron geometry = linear

• molecular geometry = linear

• approximate bond angles = 180

Steric number 3

Number of lone pairs = 0

• electron geometry = trigonal planar

• molecular geometry = trigonal planar

• bond angle = 120

number of lone pairs = 1

• electron geometry = trigonal planar

• molecular geometry = bent

• bond angle = <120

steric number 4

number of lone pairs = 0

• electron geometry = tetrahedral

• molecular geometry = tetrahedral

• bond angle = 109.5

number of lone pairs = 1

• electron geometry = tetrahedral

• molecular geometry = trigonal pyramidal

• bond angle = <109

number of lone pairs = 2

• electron geometry = tetrahedral

• molecular geometry = bent

• bond angle = «109

steric number 5

number of lone pairs = 0

• electron geometry = trigonal bipyramidal

• molecular geometry = trigonal bipyramidal

• bond angle = 90, 120, 180

number of lone pairs = 1

• electron geometry = trigonal bipyramidal

• molecular geometry = see-saw

number of lone pairs = 2

• electron geometry = trigonal bipyramidal

• molecular geometry = t-shaped

number of lone pairs = 3

• electron geometry = trigonal bipyramidal

• molecular geometry = linear

steric number 6

number of lone pairs = 0

• electron geometry = octahedral

• molecular geometry = octahedral

• bond angle = 90, 180

number of lone pairs = 1

• electron geometry = octahedral

• molecular geometry = square pyramidal

• bond angle = <90

number of lone pairs = 2

• electron geometry = octahedral

• molecular geometry = square planar

• bond angle = 90