Molecular Geometry Chart - AP Chemistry

Linear (0 lone pairs)

2 electron groups, 0 lone pairs

linear bond angle

180 degrees

trigonal planar

3 electron groups, 0 lone pairs

trigonal planar bond angle

120 degrees

bent (1 lone pair)

3 electron groups, 1 lone pair

bent bond angle (1 lone pair)

less than 120 degrees

tetrahedral

4 electron groups, 0 lone pairs

tetrahedral bond angle

109.5 degrees

trigonal pyramid

4 electron groups, 1 lone pair

trigonal pyramid bond angle

<109.5 (~107) degrees

bent (2 lone pairs)

4 electron groups, 2 lone pairs

bent bond angle (2 lone pairs)

<109.5 (~105) degrees

trigonal bypyramidal

5 electron groups, 0 lone pairs

trigonal bypyramidal bond angles

90 degrees, 120 degrees

see-saw

5 electron groups, 1 lone pairs

see-saw bond angles

<90 degrees, <120 degrees

t-structure

5 electrons, 2 lone pairs

t-structure bond angles

<90 degrees

linear (3 lone pairs)

5 electron groups, 3 lone pairs

linear (3 lone pairs) bond angle

180 degrees

octahedral

6 electron groups, 0 lone pairs

octahedral bond angle

90 degrees, 90 degrees

square pyramidal

6 electrons, 1 lone pair

square pyramidal bond angles

90 degrees, less than 90 degrees

square planar

6 electrons, 2 lone pairs

square planar bond angles

90 degrees