The Shapes of Simple Molecules and Ions

Question 1

shape of a molecules with 2 areas of electrons

Answer 1

linear

Question 2

shape of a molecules with 3 areas of electrons

Answer 2

trigonal planar

Question 3

shape of a molecules with 4 areas of electrons

Answer 3

tetrahedral

Question 4

shape of a molecules with 5 areas of electrons

Answer 4

trigonal bi-pyramid

Question 5

shape of a molecules with 6 areas of electrons

Answer 5

octahedral

Question 6

bond angle of a linear shape

Answer 6

180

Question 7

bond angle of a trigonal planar shape

Answer 7

120*

Question 8

bond angle of a tetrahedral shape

Answer 8

109.5*

Question 9

bond angle of a trigonal bi-pyramid shape

Answer 9

120* (between triangle) and 90* (between up/down and triangle)

Question 10

bond angle of an octahedral shape

Answer 10

90*

Question 11

molecular diagram of a linear molecule

Answer 11

a

Question 12

molecular diagram of a trigonal planar molecule

Answer 12

a

Question 13

molecular diagram of a tetrahedral molecule

Answer 13

a

Question 14

molecular diagram of a trigonal bi-pyramid molecule

Answer 14

a

Question 15

molecular diagram of an octahedral molecule

Answer 15

a

Question 16

shape of a molecule with 2 bonds and 1 lone pair

Answer 16

bent

Question 17

shape of molecule with 3 bonds and 1 lone pair

Answer 17

trigonal pyramid

Question 18

shape of molecule with 2 bonds and 2 lone pairs

Answer 18

bent

Question 19

shape of molecule with 4 bonds and 1 lone pair

Answer 19

see-saw

Question 20

shape of molecule with 3 bonds and 2 lone pairs

Answer 20

t-shaped

Question 21

shape of molecule with 2 bonds and 3 lone pairs

Answer 21

linear ***

Question 22

shape of molecule with 4 bonds and 2 lone pairs

Answer 22

square planar

Question 23

bond angle of molecule with 2 bonds and 1 lone pair

Answer 23

118*

Question 24

bond angle of molecule with 3 bonds and 1 lone pairs

Answer 24

107.5*

Question 25

bond angle of molecule with 2 bonds and 2 lone pairs

Answer 25

105.5*

Question 26

bond angle of molecule with 4 bonds and 1 lone pair

Answer 26

90 + 120

Question 27

bond angle of molecule with 3 bonds and 2 lone pairs

Answer 27

90*

Question 28

bond angle of molecule with 2 bonds and 3 lone pairs

Answer 28

180* ****

Question 29

bond angle of molecule with 4 bonds and 2 lone pairs

Answer 29

90*

Question 30

molecular diagram of a bent molecule

Question 31

2.5.1 and 2.5.2

Question 32

what are the 3 types of intermolecular forces

Answer 32

• induced dipole (london forces)
• permanent dipole - dipole forces
• hydrogen bond (special type of permanent dipole-dipole forces)

Question 33

where can london forces form

Answer 33

between all atoms or molecules

Question 34

how do london forces form

Answer 34

• the electrons are constantly moving
• at any one time they can be more on one side than the other
• causing a temporary dipole
• which induces a dipole on neighbouring molecules
• opposite charges attracted

Question 35

what two things cause strong london forces

Answer 35

a larger number of electrons or a greater relative molecular mass

Question 36

relative strength of pd-pd forces vs id-id forces

Answer 36

permanent dipole forces are stronger than induced dipole forces

Question 37

what is needed for a hydrogen bond to form

Answer 37

O, N, or F bonded to H

Question 38

2.5.3 from effects of intermolecular forces