Ch 10 - Molecular Geometry

Question 1

VSEPR

Answer 1

Valence Shell Electron Pair Repulsion theory.

Electron groups around the central atom will be most stable when they are as far apart from each other as possible.

Question 2

Linear Geometry

Answer 2

Lined up with 180 degrees between atoms.

Electron Geometry: Linear

Molecular Geometry: Linear

Question 3

Trigonal Planar Geometry

Answer 3

3 electron groups form a triangle around central.

120 degree bond angles.

Question 4

Tetrahedral Geometry

Answer 4

4 electron groups around a central. Form a pyramid.

Bond angle 109.5 degrees.

Question 5

Trigonal Bipyramidal Geometry

Answer 5

5 electron pairs. Form

3 in one plane with 120 degree angles.

2 above and below at 90 degree angles.

Question 6

Octahedra;

Answer 6

6 groups around central atom.

90 degree angles between all.

Electron geometry: Octahedral

Molecular Geometry: Octahedral

Question 7

Nonbonded pairs VS bonded pairs

Answer 7

nonbonded pairs are physically bigger and exert more repulsion(shortens bond angles slightly)

Question 8

Trigonal pyramidal Shape

Answer 8

Electron Geometry: Tetrahedral

Molecular Geometry: Trigonal Pyramidal(1 non bonded pair still exerts force)

Question 9

Tetrahedral Bent Shape

Answer 9

Electron Geometry: Tetrahedral

Molecular Geometry: Bent

Question 10

Seasaw Shape

Answer 10

Electron Geometry: Trigonal Bipyramidal

Molecular Geometry: Seasaw

Question 11

T-Shape

Answer 11

Electron geometry: Trigonal Bipyramidal

Molecular Geometry: T - Shaped

Question 12

Linear Shape

Answer 12

Electron Geometry: Trigonal Bipyramidal

Molecular Geometry: Linear

Question 13

Square Pyramidal Shape

Answer 13

Electron Geometry: Octahedral

Molecular geometry: Square Pyramidal

Question 14

Square Planar Shape

Answer 14

Electron Geometry: Octahedral

Molecular geometry: Square plane

Question 15

Trigonal Planar(bent)

Answer 15

electron geometry: trigonal planar

molecular geometry: bent