VSEPR Molecular Geometries

Vocabulary flashcards reviewing molecular shapes, lone pairs, electron pair totals, and bond angles according to VSEPR theory.

Linear Geometry ($AB_2$)

A molecular shape with 2 total electron pairs and 0 lone pairs, featuring a bond angle of $180^\circ$.

Trigonal Planar Geometry ($AB_3$)

A molecular shape with 3 total electron pairs and 0 lone pairs, featuring bond angles of $120^\circ$.

Bent Geometry ($AB_2E$)

A molecular shape with 3 total electron pairs and 1 lone pair, featuring a bond angle of $<120^\circ$.

Tetrahedral Geometry ($AB_4$)

A molecular shape with 4 total electron pairs and 0 lone pairs, featuring bond angles of $109.5^\circ$.

Trigonal Pyramid Geometry ($AB_3E$)

A molecular shape with 4 total electron pairs and 1 lone pair, featuring a bond angle of $107^\circ$.

Bent Geometry ($AB_2E_2$)

A molecular shape with 4 total electron pairs and 2 lone pairs, featuring a bond angle of $104.5^\circ$.

Trigonal Bipyramid Geometry ($AB_5$)

A molecular shape with 5 total electron pairs and 0 lone pairs, featuring bond angles of $90^\circ$ and $120^\circ$.

Seesaw Geometry ($AB_4E$)

A molecular shape with 5 total electron pairs and 1 lone pair, featuring bond angles of $<90^\circ$ and $<120^\circ$.

T-shape Geometry ($AB_3E_2$)

A molecular shape with 5 total electron pairs and 2 lone pairs, featuring bond angles of $<90^\circ$.

Linear Geometry ($AB_2E_3$)

A molecular shape with 5 total electron pairs and 3 lone pairs, featuring a bond angle of $180^\circ$.

Octahedral Geometry ($AB_6$)

A molecular shape with 6 total electron pairs and 0 lone pairs, featuring bond angles of $90^\circ$.

Square Pyramid Geometry ($AB_5E$)

A molecular shape with 6 total electron pairs and 1 lone pair, featuring bond angles of $<90^\circ$.

Square Planar Geometry ($AB_4E_2$)

A molecular shape with 6 total electron pairs and 2 lone pairs, featuring bond angles of $90^\circ$.

Linear Geometry ($AB_2E_4$)

A molecular shape with 6 total electron pairs and 4 lone pairs, featuring a bond angle of $180^\circ$.

VSEPR Molecular Shapes Chart

A summary reference table displaying electron pair geometries, lone pair arrangements, molecular shapes, and bond angles.