LM23-24

Question 1

Electron rich region

Answer 1

A perimeter atom (bonded pair) or lone pair (unbonded pair)

Question 2

VSEPR stands for …

Answer 2

Valence Shell Electron Pair Repulsion

Question 3

Electron rich regions always tend to

Answer 3

orient as far as possible from each other around the central atom

Question 4

2 electron rich regions and bond angle

Answer 4

Linear (180)

Question 5

3 electron rich regions and bond angle

Answer 5

Trigonal planar (120)

Question 6

4 electron rich regions and bond angle

Answer 6

Tetrahedral (109.5)

Question 7

5 electron rich regions and bond angle

Answer 7

Trigonal Bipyramidal (90, 120, 180)

Question 8

6 electron rich regions and bond angle

Answer 8

Octahedral (90, 180)

Question 9

Hybridization is found by

Answer 9

counting the number of electron rich regions, then counting that number by s, p, and d orbitals

Question 10

Molecular geometries for linear electronic

Answer 10

1: linear

Question 11

Molecular geometries for trigonal planar electronic

Answer 11

2: trigonal planar, bent/angled

Question 12

Molecular geometries for tetrahedral electronic

Answer 12

3: tetrahedral, trigonal pyramid, bent/angled

Question 13

Molecular geometries for trigonal bipyramidal electronic

Answer 13

4: trigonal bipyramidal, seesaw, T-shape, linear

Question 14

Molecular geometries for octahedral electronic

Answer 14

5: octahedral, square pyramidal, square planar, T-shape, linear

Question 15

Molecular geometries always have _ perimeter atoms

Answer 15

at least 2

Question 16

Notation for geometries

Answer 16

AB(x)U(y) (x = bonded, y = unbonded)

Question 17

Why do bond angle distortions happen?

Answer 17

Unbonded electrons take more space, which pushes the bonded ones closer together, causing angle to shrink

Question 18

Distortion occurs in ____ compounds (asymmetric, symmetric)

Answer 18

asymmetric