Number of
Electron
Domains
2
3
Hybridization
sp
sp2
ElectronDomain
Geometry
Linear
Trigonal planar
Predicted
Bond
Angle
180 °
Number of
Bonding
Domains
2
Number of
Nonbonding
Domains
0
3
0
120 °
2
4
3
4
sp3
Tetrahedral
1
Molecular
Geometry
Examples
Linear =X=
Linear -X≡
Trigonal
planar
CO2, N2O
HCN
SO3, BF3, CH2O, CO32-,
NO3-
Bent
SO2, NO2-
∙∙
Tetrahedral
CH4, NH4+, SO42-, BF4-
Trigonal
pyramidal
NH3, ClO3-, SO32-, PCl3,
H3O+
0
1
109.5°
H2O, ClO2Bent
2
2
Number of
Electron
Domains
Hybridization
ElectronDomain
Geometry
Predicted
Bond
Angle
120 ° in
triangular
plane
5
6
sp3d
sp3d2
Trigonal
bipyramidal
Octahedral
90°
between
triangular
plane and
axis
90° in
square
plane and
between
square
plane and
axis
Number of
Bonding
Domains
5
Number of
Nonbonding
Domains
0
Molecular
Geometry
Examples
Trigonal
bipyramidal
PCl5, PF5, SbF5
4
1
Seesaw
TeCl4, SF4
3
2
T-shaped
ClF3, BrF3
2
3
Linear
XeF2
6
0
Octahedral
SF6, MoF6
5
1
Square
pyramidal
BrF5
4
2
Square planar
XeF4
GSB (rev. 4/19/2010)