Basics to Chemistry VSPER Model Properties

Describe the VSEPR geometry for AX_2 with 2 electron domains.

VSEPR Geometry: AX_2 with 2 Electron Domains- Parent Geometry: Linear- Molecular Shape: Linear- Bonded Atoms (X): 2- Lone Pairs (E): 0- Bond Angle: 180^\circ

Describe the VSEPR geometry for AX_3 with 3 electron domains.

VSEPR Geometry: AX_3 with 3 Electron Domains- Parent Geometry: Trigonal Planar- Molecular Shape: Trigonal Planar- Bonded Atoms (X): 3- Lone Pairs (E): 0- Bond Angles: \sim120^\circ

Describe the VSEPR geometry for AX_2E with 3 electron domains.

VSEPR Geometry: AX_2E with 3 Electron Domains- Parent Geometry: Trigonal Planar- Molecular Shape: Bent (V-shaped)- Bonded Atoms (X): 2- Lone Pairs (E): 1- Bond Angle: <120^\circ

Describe the VSEPR geometry for AX_4 with 4 electron domains.

VSEPR Geometry: AX_4 with 4 Electron Domains- Parent Geometry: Tetrahedral- Molecular Shape: Tetrahedral- Bonded Atoms (X): 4- Lone Pairs (E): 0- Bond Angles: \sim109.5^\circ

Describe the VSEPR geometry for AX_3E with 4 electron domains.

VSEPR Geometry: AX_3E with 4 Electron Domains- Parent Geometry: Tetrahedral- Molecular Shape: Trigonal Pyramidal- Bonded Atoms (X): 3- Lone Pairs (E): 1- Bond Angles: \sim107^\circ (<109.5^\circ)

Describe the VSEPR geometry for AX2E2 with 4 electron domains.

VSEPR Geometry: AX2E2 with 4 Electron Domains- Parent Geometry: Tetrahedral- Molecular Shape: Bent- Bonded Atoms (X): 2- Lone Pairs (E): 2- Bond Angle: \sim104.5^\circ

Describe the VSEPR geometry for AX_5 with 5 electron domains.

VSEPR Geometry: AX_5 with 5 Electron Domains- Parent Geometry: Trigonal Bipyramidal- Molecular Shape: Trigonal Bipyramidal- Bonded Atoms (X): 5- Lone Pairs (E): 0- Bond Angles: 90^\circ (ax–eq), 120^\circ (eq–eq)

Describe the VSEPR geometry for AX_4E with 5 electron domains.

VSEPR Geometry: AX_4E with 5 Electron Domains- Parent Geometry: Trigonal Bipyramidal- Molecular Shape: Seesaw- Bonded Atoms (X): 4- Lone Pairs (E): 1- Bond Angles: Distorted from 90^\circ and 120^\circ

Describe the VSEPR geometry for AX3E2 with 5 electron domains.

VSEPR Geometry: AX3E2 with 5 Electron Domains- Parent Geometry: Trigonal Bipyramidal- Molecular Shape: T-shaped- Bonded Atoms (X): 3- Lone Pairs (E): 2- Bond Angles: \sim90^\circ between arms of the “T”

Describe the VSEPR geometry for AX2E3 with 5 electron domains.

VSEPR Geometry: AX2E3 with 5 Electron Domains- Parent Geometry: Trigonal Bipyramidal- Molecular Shape: Linear- Bonded Atoms (X): 2- Lone Pairs (E): 3- Bond Angle: 180^\circ

Describe the VSEPR geometry for AX_6 with 6 electron domains.

VSEPR Geometry: AX_6 with 6 Electron Domains- Parent Geometry: Octahedral- Molecular Shape: Octahedral- Bonded Atoms (X): 6- Lone Pairs (E): 0- Bond Angles: All 90^\circ (and 180^\circ across)

Describe the VSEPR geometry for AX_5E with 6 electron domains.

VSEPR Geometry: AX_5E with 6 Electron Domains- Parent Geometry: Octahedral- Molecular Shape: Square Pyramidal- Bonded Atoms (X): 5- Lone Pairs (E): 1- Bond Angles: Slightly <90^\circ

Describe the VSEPR geometry for AX4E2 with 6 electron domains.

VSEPR Geometry: AX4E2 with 6 Electron Domains- Parent Geometry: Octahedral- Molecular Shape: Square Planar- Bonded Atoms (X): 4- Lone Pairs (E): 2- Bond Angles: 90^\circ in the plane