VSPER Shapes

VSEPR model

attempts to minimize electron pair repulsions in an atom which allows it to predict shape

2 electron pairs, 0 lone pairs

linear

linear bond angle

180 degrees

3 electron pairs, 0 lone pairs

trigonal planar

trigonal planar bond angle

120

3 electron pairs, 1 lone pair

bent

bent bond angle for 3 electron pairs, 1 lone pair

less than 120 degrees

4 electron pairs, 0 lone pair

tetrahedral

tetrahedral bond angle

109.5

4 electron pairs, 1 lone pair

trigonal pyramidal

trigonal pyramidal angle

109.5 due to electron pair geometry

slightly less due to molecular geometry

4 electron pairs, 2 lone pairs

bent

bent angle

109.5 due to electron pair geometry

actually 104 due to molecular geometry

5 electron pairs, 0 lone pairs

trigonal bipyramidal

trigonal bipyramidal angle

90 for atoms on same plane

120 for atoms on different planes

5 electron pairs, 1 lone pair

seesaw

seesaw angle

90-120

5 electron pairs, 2 lone pairs

T shaped

T-shaped angle

90 and 180

5 electron pairs, 3 lone pairs

linear

6 electron pairs, 0 lone pairs

octahedral

octahedral angle

90 degrees

octahedral forms what shape

a cube with the center at om in the middle and the outside atoms as the faces

trigonal pyramidal forms what shape

a cube with the H and electron pairs on opposite corners of the planes.

6 electron pairs, 1 lone pair

square pyramidal

square pyramidal angle

slightly less 90

6 electron pairs, 2 lone pairs

square planar

square planar angle

90 degrees

multiple bonds are the same as...

single bonds in VSEPR

molecular shape considers only...

atoms