Chem Molecular Geometry

Linear (Nonpolar)

Electron Groups: 2 Bonding Groups 0 Lone Pairs

Bond Angles: 180º

Ex: CO₂

Trigonal Planar (Nonpolar)

Electron Groups: 3 Bonding Groups 0 Lone Pairs

Bond Angles: 120º

Ex: BF₃

Bent (Trigonal Planar) (Polar)

Electron Groups: 2 Bonding Groups 1 Lone Pairs

Bond Angles: <120º

Ex: SO₂

Tetrahedral (Nonpolar)

Electron Groups: 4 Bonding Groups 0 Lone Pairs

Bond Angles: 109.5º

Ex: CH₄

Trigonal Pyramidal (Polar)

Electron Groups: 3 Bonding Groups 1 Lone Pairs

Bond Angles: <109.5º

Ex: NH₃

Bent (Tetrahedral) (Polar)

Electron Groups: 2 Bonding Groups 2 Lone Pairs

Bond Angles: <109.5º

Ex: H₂O

Trigonal Bipyramidal (Nonpolar)

Electron Groups: 5 Bonding Groups 0 Lone Pairs

Bond Angles: 120º (equatorial), 90º (axial)

Ex: PCl₅

Seesaw (Polar)

Electron Groups: 4 Bonding Groups 1 Lone Pairs

Bond Angles: <120º (equatorial), <90º (axial)

Ex: SF₄

T-Shaped (Polar)

Electron Groups: 3 Bonding Groups 2 Lone Pairs

Bond Angles: <90º

Ex: BrF₃

Linear (Trigonal Bipyramidal) (Nonpolar)

Electron Groups: 2 Bonding Groups 3 Lone Pairs

Bond Angles: 180º

Ex: XeF₂

Octahedral (Nonpolar)

Electron Groups: 6 Bonding Groups 0 Lone Pairs

Bond Angles: 90º

Ex: SF₆

Square Pyramidal (Polar)

Electron Groups: 5 Bonding Groups 1 Lone Pairs

Bond Angles:<90º

Ex: BrF₅

Square Planar (Nonpolar, surrounding atoms must be the same).

Electron Groups: 4 Bonding Groups 2 Lone Pairs

Bond Angles: 90º

Ex: XeF₄