DAT: Molecular Geometry

Atoms: 2
Lone pairs on central atom: 0
Bond angle: 180°
Hybridization: sp

Examples: CO₂, BeCl₂

Linear (AX₂)

Atoms: 3
Lone pairs: 0
Bond angle: 120°
Hybridization: sp²

Examples: BF₃, SO₃

Trigonal Planar (AX₃)

Atoms: 4
Lone pairs: 0
Bond angle: 109.5°
Hybridization: sp³

Examples: CH₄, NH₄⁺

Tetrahedral (AX₄)

Atoms: 3
Lone pairs: 1
Bond angle: ~107°
Hybridization: sp³

Example: NH₃

Trigonal Pyramidal (AX₃E)

Atoms: 2
Lone pairs: 1 or 2
Bond angle:
• AX₂E → ~118°
• AX₂E₂ → 104.5°

Examples: SO₂, H₂O

Bent (AX₂E)

Atoms: 5
Lone pairs: 0
Bond angles: 90°, 120°, 180°
Hybridization: sp³d

Example: PCl₅

Trigonal Bipyramidal (AX₅)

Atoms: 6
Lone pairs: 0
Bond angle: 90°
Hybridization: sp³d²

Example: SF₆

Octahedral (AX₆)