VSEPR Geometries and Molecular Shapes Reference

Vocabulary flashcards covering VSEPR molecular shapes, electron group classifications, lone pair counts, bond angles, and chemical examples based on the reference sheet.

VSEPR Geometries Chart (2D Drawings)

Reference grid displaying electron pair geometries, lone pair arrangements, 2D structural representations, and bond angles for 2 to 6 electron pairs.

VSEPR Molecular Shapes (3D Models)

Reference table listing number of electron groups, VSEPR formulas ($\text{AX}_n\text{E}_m$), 3D ball-and-stick models, molecular shape names, and chemical examples.

Linear Shape ($\text{AX}_2$)

A molecular geometry with $2$ electron groups ($2$ bonds, $0$ lone pairs), a bond angle of $180^\circ$, and example molecule $\text{BeF}_2$.

Trigonal Planar Shape ($\text{AX}_3$)

A molecular geometry with $3$ electron groups ($3$ bonds, $0$ lone pairs), a bond angle of $120^\circ$, and example molecule $\text{BF}_3$.

Bent Shape ($\text{AX}_2\text{E}$)

A molecular geometry with $3$ electron groups ($2$ bonds, $1$ lone pair), a bond angle of $< 120^\circ$, and example molecule $\text{SnCl}_2$.

Tetrahedral Shape ($\text{AX}_4$)

A molecular geometry with $4$ electron groups ($4$ bonds, $0$ lone pairs), a bond angle of $109.5^\circ$, and example molecule $\text{CF}_4$.

Trigonal Pyramidal Shape ($\text{AX}_3\text{E}$)

A molecular geometry with $4$ electron groups ($3$ bonds, $1$ lone pair), a bond angle of $< 109^\circ$ (or $107^\circ$), and example molecule $\text{PCl}_3$.

Bent Shape ($\text{AX}_2\text{E}_2$)

A molecular geometry with $4$ electron groups ($2$ bonds, $2$ lone pairs), a bond angle of $<< 109^\circ$ (or $104.5^\circ$), and example molecule $\text{H}_2\text{S}$.

Trigonal Bipyramidal Shape ($\text{AX}_5$)

A molecular geometry with $5$ electron groups ($5$ bonds, $0$ lone pairs), bond angles of $90^\circ$ and $120^\circ$, and example molecule $\text{SbCl}_5$.

Seesaw / Sawhorse Shape ($\text{AX}_4\text{E}$)

A molecular geometry with $5$ electron groups ($4$ bonds, $1$ lone pair), bond angles of $< 90^\circ$ and $< 120^\circ$, and example molecule $\text{TeCl}_4$.

T-shaped ($\text{AX}_3\text{E}_2$) - 5 Electron Groups

A molecular geometry with $5$ electron groups ($3$ bonds, $2$ lone pairs), bond angles of $< 90^\circ$, and example molecule $\text{BrF}_3$.

Linear Shape ($\text{AX}_2\text{E}_3$)

A molecular geometry with $5$ electron groups ($2$ bonds, $3$ lone pairs), a bond angle of $180^\circ$, and example molecule $\text{XeF}_2$.

Octahedral Shape ($\text{AX}_6$)

A molecular geometry with $6$ electron groups ($6$ bonds, $0$ lone pairs), a bond angle of $90^\circ$, and example molecule $\text{SF}_6$.

Square Pyramidal Shape ($\text{AX}_5\text{E}$)

A molecular geometry with $6$ electron groups ($5$ bonds, $1$ lone pair), a bond angle of $< 90^\circ$, and example molecule $\text{BrF}_5$.

Square Planar Shape ($\text{AX}_4\text{E}_2$)

A molecular geometry with $6$ electron groups ($4$ bonds, $2$ lone pairs), a bond angle of $90^\circ$, and example molecule $\text{XeF}_4$.