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Question 1

Which molecule is not able to form a co-ordinate bond with another species?

Answer 1

B, CH4

Question 2

Which species has a square planar shape?

Answer 2

C, XeF4

Question 3

Which bond has the most unsymmetrical electron distribution?

Answer 3

A, H–O

Question 4

Which statement about inorganic ionic compounds is always correct?

Answer 4

C, They contain metal cations.

Question 5

Which species has a lone pair of electrons on the central atom?

Answer 5

B, SO2

Question 6

In which substance do covalent bonds break when it melts?

Answer 6

B, ice

Question 7

In which molecule are all the atoms in the same plane?

Answer 7

A, CH3CHO

Question 8

Which molecule has a permanent dipole?

Answer 8

B, NH3

Question 9

Which substance contains delocalised electrons?

Answer 9

B, graphite

Question 10

Which species contains bonds that have different polarities?

Answer 10

C, CH3Cl

Question 11

Which compound has hydrogen bonding?

Answer 11

B, NH3

Question 12

Which compound contains a co-ordinate bond?

Answer 12

D, NH4Cl

Question 13

Which molecule has a permanent dipole?

Answer 13

D, Cl2O

Question 14

Which has a bond angle of 109.5°?

Answer 14

D, NH3

Question 15

Which substance has delocalised electrons?

Answer 15

A, graphite

Question 16

Which species is not pyramidal in shape?

Answer 16

D, BF3

Question 17

Which change occurs when water is vaporised?

Answer 17

C, Intermolecular forces are overcome.

Question 18

Which compound has the highest boiling point?

Answer 18

D, CH3CH2COOH

Question 19

Which is not responsible for conduction of electricity?

Answer 19

D, The lone pair electrons on water molecules

Question 20

Which row shows the bonding in ammonium chloride?

Answer 20

A, ✔, ✘, ✘

Question 21

Which molecule does not have a permanent dipole?

Answer 21

D, CBr4

Question 22

Which compound has the highest boiling point?

Answer 22

B, butan-2-ol

Question 23

Which diagram shows the correct bonding and correct bond polarity in a molecule of oxygen difluoride?

Answer 23

A

Question 24

Which species has a shape that is influenced by the presence of one or more lone pairs of electrons around the central atom?

Answer 24

B, ClF3

Question 25

Which is the correct crystal structure for the substance named?

Answer 25

A, Iodine, Simple molecular

Question 26

Which species has one or more bond angle(s) of 90°?

Answer 26

C, ClF4−

Question 27

Which is the most likely bond angle around the oxygen atom in ethanol?

Answer 27

A, 104.5°

Question 28

Which compound has the highest boiling point?

Answer 28

A, CH3CH2CH2OH

Question 29

Which molecule does not have a permanent dipole?

Answer 29

C, CF4

Question 30

Which of these species is not planar?

Answer 30

C, CH3OH

Question 31

Which of these statements best describes a dative covalent bond?

Answer 31

B, A pair of electrons shared between two atoms, where one atom has donated two electrons.

Question 32

Which molecule is the least polar?

Answer 32

D, Tetrabromomethane

Question 33

Which statement about intermolecular forces is not correct?

Answer 33

B, Hydrogen bonding occurs between HBr molecules.

Question 34

Which of these species has a trigonal planar structure?

Answer 34

B, BCl3

Question 35

Use your understanding of intermolecular forces to predict which of these compounds has the highest boiling point.

Answer 35

A, HF

Question 36

Which type of bond is formed between N and B when a molecule of NH3 reacts with a molecule of BF3?

Answer 36

C, Co-ordinate.

Question 37

Which of these atoms has the highest electronegativity?

Answer 37

C, Cl

Question 38

What is the formula of calcium nitrate(V)?

Answer 38

B, Ca(NO3)2

Question 39

Which of these substances does not show hydrogen bonding?

Answer 39

D, CHF3

Question 40

Which of these substances has permanent dipole-dipole attractions between molecules?

Answer 40

C, (CH3)2CO