Ch 9+10 (MO And VB Theory)

Question 1

Hybrid of steric number =3

Answer 1

Sp^2

Question 2

Hybrid of steric number =4

Answer 2

Sp^3

Question 3

Hybrid of steric number =5

Answer 3

sp^3d

Question 4

Hybrid of steric number =6

Answer 4

sp^3d^2

Question 5

Steric number =

Answer 5

of bonded atoms + # of lone pairs

Question 6

Ideal bond angle for linear geo

Answer 6

180

Question 7

Ideal bond angle for trigonal planar

Answer 7

120

Question 8

Ideal bond angle for bent(2 bonded, 1 lone pair)

Question 9

Ideal bond angle for tetrahedral

Answer 9

109.5

Question 10

Ideal bond angle for trigonal pyramid

Answer 10

109.5

Question 11

Idea bond angle for (2 bonded, 2 lps)

Answer 11

109.5

Question 12

Ideal bond angle for trigonal bipyramidal

Answer 12

90,120,180

Question 13

Ideal bond angle for seesaw

Answer 13

90,120,180

Question 14

Ideal bond angle for t shaped

Answer 14

90,180

Question 15

Ideal bond angle for octahedral

Answer 15

90,180

Question 16

Ideal bond angle for square pyramidal

Answer 16

90,180

Question 17

Ideal bond angle for square planar

Answer 17

90,180

Question 18

3-D drawings wedges=

Answer 18

Outwards

Question 19

3-D drawings solid line

Answer 19

Same plane

Question 20

3-D drawings dotted line

Answer 20

Into page

Question 21

Bond order =

Answer 21

1/2(#bonding electrons - anti bonding electrons)

Question 22

O,F,Ne molecular orbital is more stable

Answer 22

Sigma 2p is stable; so lower energy

Question 23

B,C,N molecular orbital more stable?

Answer 23

Pi 2p is more stable; so it’s lower energy

Question 24

Molecular orbital configuration for B,C,N

Answer 24

(Sigma2s)(sigma star 2s)(pi2p)(sigma 2p)(pi star 2p)(sigma star 2p)

Question 25

Molecular orbital configuration for O,F,Ne

Answer 25

(Sigma 2s)(sigma star 2s)(sigma 2p)(pi 2p)(pi star 2p)(sigma star 2p)

Question 26

If lighter element and heavier element in a compound than the MO diagram is

Answer 26

Based on heavier element; (sigma 2p)(pi 2p)

Question 27

Atomic orbitals shifts down for …

Answer 27

More electronegative element

Question 28

Sigma carries ______ electrons

Answer 28

2

Question 29

Pi carries _____ electrons

Answer 29

4

Question 30

Hybrid of steric number =2

Answer 30

Sp