Molecular Geometry & Electron Arrangement

What counts as one electron group?

A lone pair, a single bond, a double bond, a triple bond, or a single electron (count only groups around the central atom)

2 electron groups: 2 bonding groups, 0 lone pairs

Electron geometry: Linear; Molecular geometry: Linear; Bond angle: 180°; Example: CO2

3 electron groups: 3 bonding groups, 0 lone pairs

Electron geometry: Trigonal planar; Molecular geometry: Trigonal planar; Bond angle: 120°; Example: BF3

3 electron groups: 2 bonding groups, 1 lone pair

Electron geometry: Trigonal planar; Molecular geometry: Bent; Bond angle: <120°; Example: SO2

4 electron groups: 4 bonding groups, 0 lone pairs

Electron geometry: Tetrahedral; Molecular geometry: Tetrahedral; Bond angle: 109.5°; Example: CH4

4 electron groups: 3 bonding groups, 1 lone pair

Electron geometry: Tetrahedral; Molecular geometry: Trigonal pyramidal; Bond angle: <109.5°; Example: NH3

4 electron groups: 2 bonding groups, 2 lone pairs

Electron geometry: Tetrahedral; Molecular geometry: Bent; Bond angle: <109.5°; Example: H2O

5 electron groups: 5 bonding groups, 0 lone pairs

Electron geometry: Trigonal bipyramidal; Molecular geometry: Trigonal bipyramidal; Bond angles: 120° (equatorial), 90° (axial); Example: PCl5

5 electron groups: 4 bonding groups, 1 lone pair

Electron geometry: Trigonal bipyramidal; Molecular geometry: Seesaw; Bond angles: <120° (equatorial), <90° (axial); Example: SF4

5 electron groups: 3 bonding groups, 2 lone pairs

Electron geometry: Trigonal bipyramidal; Molecular geometry: T-shaped; Bond angle: <90°; Example: BrF3

5 electron groups: 2 bonding groups, 3 lone pairs

Electron geometry: Trigonal bipyramidal; Molecular geometry: Linear; Bond angle: 180°; Example: XeF2

6 electron groups: 6 bonding groups, 0 lone pairs

Electron geometry: Octahedral; Molecular geometry: Octahedral; Bond angle: 90°; Example: SF6

6 electron groups: 5 bonding groups, 1 lone pair

Electron geometry: Octahedral; Molecular geometry: Square pyramidal; Bond angle: <90°; Example: BrF5

6 electron groups: 4 bonding groups, 2 lone pairs

Electron geometry: Octahedral; Molecular geometry: Square planar; Bond angle: 90°; Example: XeF4

CO2: geometry and bond angle?

Linear (2 groups, 0 lone pairs); 180°

BF3: geometry and bond angle?

Trigonal planar (3 groups, 0 lone pairs); 120°

SO2: geometry and bond angle?

Bent (3 groups, 2 bonding, 1 lone pair); <120°

CH4: geometry and bond angle?

Tetrahedral (4 groups, 0 lone pairs); 109.5°

NH3: geometry and bond angle?

Trigonal pyramidal (4 groups, 3 bonding, 1 lone pair); <109.5°

H2O: geometry and bond angle?

Bent (4 groups, 2 bonding, 2 lone pairs); <109.5°

PCl5: geometry and bond angles?

Trigonal bipyramidal (5 groups, 0 lone pairs); 120° equatorial, 90° axial

SF4: geometry and bond angles?

Seesaw (5 groups, 4 bonding, 1 lone pair); <120° equatorial, <90° axial

BrF3: geometry and bond angle?

T-shaped (5 groups, 3 bonding, 2 lone pairs); <90°

XeF2: geometry and bond angle?

Linear (5 groups, 2 bonding, 3 lone pairs); 180°

SF6: geometry and bond angle?

Octahedral (6 groups, 0 lone pairs); 90°

BrF5: geometry and bond angle?

Square pyramidal (6 groups, 5 bonding, 1 lone pair); <90°

XeF4: geometry and bond angle?

Square planar (6 groups, 4 bonding, 2 lone pairs); 90°