Electron and Molecular Geometries

Question 1

Trigonal Planar/Trigonal Planar

Answer 1

Approximate Bond Angle: 120°
3 electron groups, specifically 3 bonding groups.

Question 2

Linear/Linear

Answer 2

Approximate Bond Angle: 180°
2 electron groups, specifically 2 bonding groups.

Question 3

Trigonal Planar/Bent

Answer 3

Approximate Bond Angle: <120°
3 electron groups, specifically 2 bonding groups and 1 lone pair of electrons.

Question 4

Tetrahedral/Tetrahedral

Answer 4

Approximate Bond Angle: 109.5°
4 electron groups, specifically 4 bonding groups.

Question 5

Tetrahedral/Trigonal Pyramidal

Answer 5

Approximate Bond Angle: <109.5°
4 electron groups, specifically 3 bonding groups and 1 lone pair of electrons.

Question 6

Tetrahedral/Bent

Answer 6

Approximate Bond Angle: <109.5°
4 electron groups, specifically 2 bonding groups and 2 lone pairs of electrons.

Question 7

Trigonal Bipyramidal/Trigonal Bipyramidal

Answer 7

Approximate Bond Angle: 120° (equatorial) and 90° (axial).
5 electron groups, specifically 5 bonding groups.

Question 8

Trigonal Bipyramidal/Seesaw

Answer 8

Approximate Bond Angle: <120° (equatorial) and <90° (axial).
5 electron groups, specifically 4 bonding groups and 1 lone pair of electrons.

Question 9

Trigonal Bipyramidal/T-Shaped

Answer 9

Approximate Bond Angle: <90°
5 electron groups, specifically 3 bonding groups and 2 lone pairs of electrons.

Question 10

Trigonal Bipyramidal/Linear

Answer 10

Approximate Bond Angle: 180°
5 electron groups, specifically 2 bonding groups and 3 lone pairs of electrons.

Question 11

Octahedral/Octahedral

Answer 11

Approximate Bond Angle: 90°
6 electron groups, specifically 6 bonding groups.

Question 12

Octahedral/Square Pyramidal

Answer 12

Approximate Bond Angle: <90°
6 electron groups, specifically 5 bonding groups and 1 lone pair of electrons.

Question 13

Octahedral/Square Planar

Answer 13

Approximate Bond Angle: 90°
6 electron groups, specifically 4 bonding groups and 2 lone pairs of electrons.