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Molecular Geometry
Common molecular geometry shapes with two to six electron groups
13
Chemistry
Undergraduate 1
10/04/2011
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Term
Linear (2)
 Definition
AX2

Electron Groups: 2

Bonding Groups: 2

Bond Angle(s): 180
Term
Trigonal Planar
 Definition
AX3

Electron Groups: 3

Bonding Groups: 3

Bond angle(s): 120
Term
V shaped or Bent (3)
 Definition
AX2E

Electron Groups: 3

Bonding Groups: 2

Nonbonding Groups: 1

Bond Angle(s): <120
Term
Tetrahedral
 Definition
AX4

Electron Groups: 4

Bonding Groups: 4

Bond angles: 109.5
Term
Trigonal Pyramidal
 Definition
AX3E

Electron Groups: 4

Bonding Groups: 3

Nonbonding Groups: 1

Bond Angles: <109.5
Term
V shaped or Bent (4)
 Definition
AX2E2

Electron Groups: 4

Bonding Groups: 2

Nonbonding Groups: 2

Bond angles: <109.5
Term
Trigonal bipyramidal
 Definition
AX5

Electron Groups: 5

Bonding Groups: 5

Bond angles: 90 ax / 120 eq
Term
Seesaw
 Definition
AX4E

Electron Groups: 5

Bonding Groups: 4

Nonbonding Groups: 1

Bond angles: <90 ax / <120 eq
Term
T shaped
 Definition
AX3E2

Electron Groups: 5

Bonding Groups: 3

Nonbonding Groups: 2

Bond angles: <90 ax
Term
Linear (5)
 Definition
AX2E3

Electron Groups: 5

Bonding Groups: 2

Nonbonding Groups: 3

Bond angles: 180
Term
Octahedral
 Definition
AX6

Electron Groups: 6

Bonding Groups: 6

Bond angles: 90
Term
Square Pyramidal
 Definition
AX5E

Electron Groups: 6

Bonding Groups: 5

Nonbonding Groups: 1

Bond angles: <90
Term
Square Planar
 Definition
AX4E2

Electron Groups: 6

Bonding Groups: 4

Nonbonding Groups: 2

Bond angles: 90
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