Shapes of Molecules

Shape: 2 bond pairs, no lone pairs

Linear

Bond Angle for linear

180°

Shape: 3 bond pairs & no lone pairs

Trigonal Planar

Shape: 2 bond pairs & 1 lone pair

Bent (with the lone pair taking up most of the space)

Bond angle of trigonal planar

120°

Bond angle of bent

<120°

Shape: 4 bond pairs & 0 lone pairs

Tetrahedral

Bond angle for tetrahedral

109°

Shape: 3 bond pairs, 1 lone pair

Trigonal Pyramidal

Bond angle for trigonal pyramidal

~107°

Shape: 2 bond pairs & 2 lone pairs

Bent

Bond angle for bent (2 bond & lone pairs)

105° (where the 2 lone pairs are next to eo & repel the bp away from them)

Shape: 5 bond pairs

Trigonal Bipyramidal

Bond angle for trigonal bipyramidal

90°, 120°, 180°

Shape: 4 bond pairs, 1 lone pair

Distorted tetrahedral OR Seesaw

Bond angle for distorted tetrahedral

NIL (the lone pair takes up the most space)

Shape: 3 bond pairs, 2 lone pairs

T-shape

Bond angle for T-shape

NIL (the lone pairs are together, compressing the bp closer tgt)

Shape: 2 bond pairs, 3 lone pairs

Linear

Bond Angle for Linear (2 bp, 3 lp)

180° (bond pairs directly opp central atom)

Shape: 6 bond pairs

Octahedral

Bond angle of octahedral

90°

Shape: 5 bond pairs, 1 lone pair

Square pyramidal

Bond angle for square pyramidal

NIL (the lp repels the bp, bp closer tgt)

Shape: 4 bond pairs, 2 lone pairs

Square planar

Bond angle for square planar

90° (the lone pairs are directly opposite each other, 2 bp on each side)