VSEPR Geometries - Chemistry

Linear

• 2 domains (sp)

• 2 atoms (excluding the central)

• Bond angle: 180°

Trigonal Planar

• 3 domains (sp²)

• 3 atoms (excluding the central)

• Bond angle: 120°

Bent/Angular

• 3 domains (sp²)

• 2 atoms (excluding the central)

• 1 lone electron pair

• Bond angle: < 120°

Tetrahedral

• 4 domains (sp³)

• 4 atoms (excluding the central)

• Bond angle: 109.5°

Trigonal Pyramidal

• 4 domains (sp³)

• 3 atoms (excluding the central)

• 1 lone electron pair

• Bond angle: < 109°

Bent/Angular

• 4 domains (sp³)

• 2 atoms (excluding the central)

• 2 lone electron pairs

• Bond angle: << 109°

Linear

• 4 domains (sp³)

• 1 atom (excluding the central)

• 3 lone electron pairs

• Bond angle: 180°

Trigonal Bipyramidal

• 5 domains (sp³d)

• 5 atoms (excluding the central)

• Bond angles: 120° & 90°

Octahedral

• 6 domains (sp³d²)

• 6 atoms (excluding the central)

• Bond angle: 90°