Shapes of Molecules and Ions
Total No. of No. of lone Shape Bond angle Examples
number of bonding pairs of
electron pairs of electrons
pairs electrons
around a
central
atom
2 2 0 Linear 180 BeCL2, CO2
3 3 0 Trigonal 120 BF3
Planar
4 4 0 Tetrahedral 109.5 CH4, NH4+
4 3 1 Pyramidal 107 NH3, H30+
Total no. of No. of No. of lone Shape Bond angle Examples
electrons bonding pairs of
around a pairs of electrons
central atom electrons
4 2 2 Bent 104.5 H20, BrF2+
5 5 0 Trigonal 90 and 120 PF5
Bipyramidal
5 3 2 T-Shaped 86 BrF3
5 2 3 Linear 180 XeF2
6 6 0 Octahedral 90 SF6
6 4 2 Square 90 BrF4-
Planar
Square planar
Total No. of No. of lone Shape Bond angle Examples
number of bonding pairs of
electron pairs of electrons
pairs electrons
around a
central
atom
2 2 0 Linear 180 BeCL2, CO2
3 3 0 Trigonal 120 BF3
Planar
4 4 0 Tetrahedral 109.5 CH4, NH4+
4 3 1 Pyramidal 107 NH3, H30+
Total no. of No. of No. of lone Shape Bond angle Examples
electrons bonding pairs of
around a pairs of electrons
central atom electrons
4 2 2 Bent 104.5 H20, BrF2+
5 5 0 Trigonal 90 and 120 PF5
Bipyramidal
5 3 2 T-Shaped 86 BrF3
5 2 3 Linear 180 XeF2
6 6 0 Octahedral 90 SF6
6 4 2 Square 90 BrF4-
Planar
Square planar
