pg 247-249

Question 1

what are all the possible resonance forms of BeH2

Answer 1

H-Be-H
H+ Be- -H
H-Be- H+
H- Be+-H
H-Be+ H- 
H- Be2+ H-
H+ Be2 H+

Question 2

which resonance form contributes the least to these covalent structures

Answer 2

the ones with large charges on the atoms and no covalent bonds

Question 3

when is resonance in anions the most useful

Answer 3

when there is a combination of single and double bonds connected to oxygen atoms

Question 4

what sort of bonding is in carbonate CO3

Answer 4

sp2 hybridization

Question 5

what is the charge on each oxygen in CO3^2-

Answer 5

-2/3

Question 6

what is the bond order of each C-O bond

Answer 6

4/3

Question 7

what is the geometry in each bond in a benzene

Answer 7

trigonal planar

Question 8

what type of hybridization is in benzene

Answer 8

sp2 hybridized

Question 9

what molecule is aromatic

Answer 9

benzene

Question 10

why do smaller atoms never break the octet rule

Answer 10

they are too small to fit more electrons round them favourably
the empty orbitals are too high energy to be occupied

Question 11

how is hypervalency shown to not break octet rule in VB

Answer 11

it uses charge separation