CH10 - Molecular Geometry, Electron Geometry, Bond Angles - VSEPR Theory

Linear molecular geometry

What is the bond angle for linear molecular geometry

180 degrees

Linear electron geometry

AXmEn formula for linear

AX2 or AX2E3 (Trigonal bipyramidal electron geometry but molecular linear geometry)

Examples of linear compounds

CO2, BeCl2

Trigonal planar molecular geometry

Trigonometry planar ideal bond angle

120

Trigonal planar electron arrangement

Trigonal planar examples

BF3, SO3

AXmEn formula for Trigonal planar

AX3 (no lone pairs)

Trigonal pyrmidal

Trigonal pyramidal ideal bond angle

107

What is the electron geometry for Trigonal planar?

Tetrahedral

Trigonal pyramidal examples

NH3

AXmEn formula for Trigonal pyramidal

AX3

Bent

Bent ideal bond angle

104.5

What is the electron geometry for bent molecular geometry?

Example of bent geometry

H2O

AXmEn for bent

AX2E2 or E1

Tetrahedral molecular geometry

Tetrahedral molecular geometry ideal bond angle

109.5

Tetrahedral electron geometry

Same

Tetrahedral molecular geometry example

CH4, CIO4(minus charge)

AXmEn formula for tetrahedral

AX4 (no lone pairs)

Trigonal bipyramidal

Trigonal bipyramidal ideal bond angle

120, 90

Electron geometry for Trigonal bipyramidal

Examples for Trigonal bipyramidal

PCl5

AXmEn formula for Trigonal bipyramidal

AX5

Seesaw molecular

Ideal bond angle

180, 120, 90

Seesaw electron geometry

Trigonal bipyramidal

Seesaw example

SF4

AXmEn for seesaw

AX4E

T shaped

Ideal bond angle for t shaped molecular geometry

180, 90

T shaped electron geometry

Trigonal bipyramidal

T shaped examples

CF3

AXmEn for t shaped

AX3E2

Octahedral molecular geometry

Octahedral ideal bond angle

90

Electron geometry for octahedral molecular geometry

Octahedral

Examples of octahedral

SF6, WCl6

AXmEn formula for octahedral

AX6

Square pyramidal

Square pyramidal ideal bond angle

90

Electron arrangement for square pyramidal molecular arrangement

Octahedral

Example of square pyramidal

BrF5

AXmEn formula for square pyramidal

AX4E2 or AX5E

Square planar molecular geometry

Square planar molecular geometry ideal bond angle

90 between adjacent bonds, 180 between those across from eachother

Square planar electron geometry

Octahedral

Example of square planar

XeF4

AXmEn formula for square planar

AX4E2