Shapes of Molecules

Question 1

CH4

Answer 1

4 bonding pairs
0 lone pairs
Tetrahedral
109.5

Question 2

NH3

Answer 2

3 bonding pairs
1 lone pair
Pyramidal/Distorted tetrahedral
107.5

Question 3

H2O

Answer 3

2 bonding pairs
2 lone pairs
V-shaped
104.5

Question 4

BeCl2

Answer 4

2 bonding pairs
0 lone pairs
Linear
180

Question 5

BCl3

Answer 5

3 bonding pairs
0 lone pairs
Trigonal planar
120

Question 6

PCl5

Answer 6

5 bonding pairs
0 lone pairs
Bipyramidal
90 and 120

Question 7

SF6

Answer 7

6 bonding pairs
0 lone pairs
Octahedral
90

Question 8

H3O+

Answer 8

3 bonding pairs
1 lone pair
Pyramidal/Distorted tetrahedral
107.5

Question 9

NH4+

Answer 9

4 bonding pairs
0 lone pairs
Tetrahedral
109.5

Question 10

ICl3

Answer 10

3 bonding pairs
2 lone pairs
T-shaped (slightly less than 90)
or trigonal planar (90 and 120)

Question 11

IF4-

Answer 11

4 bonding pairs
2 lone pairs
Square planar
90

Question 12

AlCl4-

Answer 12

4 bonding pairs
0 lone pairs
Tetrahedral
109.5

Question 13

XeF4

Answer 13

4 bonding pairs
2 lone pairs
Square planar
90

Question 14

Ethene (C2H4)

Answer 14

3 bonding pairs (on each carbon)
0 lone pairs
Trigonal planar
120

Question 15

Ethyne (C2H2)

Answer 15

2 bonding pairs (on each carbon)
0 lone pairs
Linear
180

Question 16

SO3

Answer 16

3 bonding pairs (all double bonds)
0 lone pairs
Trigonal planar
120

Question 17

S02

Answer 17

2 bonding pairs (double bonds)
1 lone pair
V-shaped
118

Question 18

CO2

Answer 18

2 bonding pairs (double bonds)
0 lone pairs
Linear
180

Question 19

SO4^2-

Answer 19

4 bonding pairs (2 double, 2 single)
0 lone pairs
Tetrahedral
109.5

Question 20

ClO3

Answer 20

3 bonding pairs (2 double, 1 single)
1 lone pair
Pyramidal
107.5

Question 21

ClF2+

Answer 21

2 bonding pairs
2 lone pairs
V-shaped
104.5

Question 22

SiCl4

Answer 22

4 bonding pairs
0 lone pairs
Tetrahedral
109.5