Chemistry 132 Molecular Geometry Flashcards

Study Notes

Molecular Geometry and Bond Angles

AX represents linear molecular geometry with bond angles of 180 degrees.
AX2 also indicates linear geometry, maintaining bond angles of 180 degrees.
AXE indicates a linear shape with bond angles still at 180 degrees despite the presence of one lone pair.

Trigonal Planar Geometry

AX3 showcases trigonal planar geometry with bond angles of 120 degrees.
AX2E, featuring one lone pair, retains a trigonal planar configuration, with bond angles at 120 degrees.
AXE2 maintains a trigonal planar shape, also with bond angles of 120 degrees when two lone pairs are present.

Tetrahedral Geometry

AX4 reflects tetrahedral geometry, characterized by bond angles of 109.5 degrees.
AX3E demonstrates a tetrahedral arrangement, with one lone pair influencing the bond angles, still at 109.5 degrees.
AX2E2 presents a tetrahedral structure with two lone pairs, maintaining bond angles of 109.5 degrees.
AXE3 continues the tetrahedral trend with three lone pairs, keeping bond angles at 109.5 degrees.

Trigonal Bipyramidal Geometry

AX5 represents trigonal bipyramidal geometry with bond angles of 90 and 120 degrees.
AX4E retains the trigonal bipyramidal shape while incorporating one lone pair, preserving bond angles of 90 and 120 degrees.
AX3E2 also reflects trigonal bipyramidal geometry with two lone pairs, maintaining bond angles at 90 and 120 degrees.
AX2E3 continues this pattern with three lone pairs, sustaining the dual bond angles of 90 and 120 degrees.

Octahedral Geometry

AX6 defines octahedral geometry characterized by bond angles of 90 degrees.
AX5E maintains octahedral structure with one lone pair, keeping bond angles at 90 degrees.
AX4E2 exhibits octahedral geometry retaining bond angles of 90 degrees with two lone pairs present.

Description

Test your knowledge of molecular geometry with these flashcards focused on bond angles and the AX nomenclature. Each card highlights different molecular structures and their corresponding bond angles, helping you master this essential chemistry concept.