Chapter 3: Bonding and Chemical Interactions

Question 1

Bond lenght = longest

Answer 1

Bond strenght = weakest

Question 2

Bond lenght = shortest

Answer 2

Bond strenght = stronger

Question 3

Formal charge

Answer 3

= valence electrons - dots - sticks

Question 4

Resonance rules

Answer 4

1) Lewis structure with smaller or no formal charge is preferred
2) Lewis strucuture with less separation between opposite charges is preferred over a Lewis structure with a large separation of oposite charge
3) Lewis structure in which negative formal charge are placed on more electronegative atoms is more stable then one in which the negative formal charges are placed on less electronegative atoms

Question 5

Regions of electron density = 2

Answer 5

linear (180)

Question 6

Regions of electron density = 3

Answer 6

trigonal planar (120)

Question 7

Regions of electron density = 4

Answer 7

tetrahedral (109.5)

Question 8

Regions of electron density = 5

Answer 8

trigonal bypyramidal (90, 120, 180)

Question 9

Regions of electron density = 6

Answer 9

octahedral (90, 180)

Question 10

Dipole moment

Answer 10

p = q d

p =dipole moment
q = magnitude of the charge
d = displacement vector separating the two partial charges