DP IB Chemistry: SL

Topic Questions

IBChemistry: SLDPTopic Questions4. Chemical Bonding & Structure4.2 Resonance, Shapes & Giant Structures

Syllabus Edition

First teaching 2014

Last exams 2024

|

4.2 Resonance, Shapes & Giant Structures

DownloadView
Easy
Medium
Hard
Easy
Medium
Hard
11 mark

Hydrazine, N2H4, is a precursor for multiple pharmaceutical compounds. 

Which of the diagrams below illustrate the most likely structure and bond angle of hydrazine?

ma1_14-2_ib_sl_mcq_easy

Choose your answer

Did this page help you?

21 mark

Two boron-containing species, boron trifluoride (BF3) and the borohydride ion (BH4-), have different molecular shapes. 

What are the shapes around the boron atom in these molecules?

 

boron trifluoride (BF3)

borohydride ion (BH4−)

A

pyramidal

tetrahedral

B

pyramidal

square planar

C

trigonal planar

tetrahedral

D

trigonal planar

square planar

Choose your answer

Did this page help you?

31 mark

Graphite has a structure containing layers of carbon atoms in hexagonal rings.

Why is graphite a good conductor of electricity?

  • It has delocalised ions which can move and carry charge

  • It has delocalised electrons which are mobile

  • There are only weak London forces between the layers

  • Each carbon atom in the layers has only three covalent bonds

Choose your answer

Did this page help you?

41 mark

What is the correct bond angle in a trigonal planar molecule?

  • 107°

  • 120°

  • 180°

  • 109.5°

Choose your answer

Did this page help you?

51 mark

Which of the following is correct?

 

Shape of SF6 molecule

Bond angle in SF6 molecule

A

Octahedral

90°

B

Square planar

90°

C

Trigonal bipyramidal

120°

D

Tetrahedral

109.5°

Choose your answer

Did this page help you?

61 mark

Which statement about the physical properties of substances is correct?

  • Covalent structures always have high melting points

  • Metals only conduct electricity when solid

  • Metals always have high melting points 

  • Ionic substances conduct electricity when liquid 

Choose your answer

Did this page help you?

71 mark

Which of the following statements about graphite is correct?

  • The bond angle in graphite is 109.5 o

  • There are only London forces between the layers of graphite

  • Graphite has a higher melting point than diamond

  • Graphite is soluble in water

Choose your answer

Did this page help you?

81 mark

Which of the following is the correct resonance hybrid structure of the carbonate ion, CO32-?

q8_14-2_ib_sl_easy_mcq

Choose your answer

Did this page help you?

91 mark

Which of the following is correct?

 

Shape of CCl4 molecule

Bond angle in CCl4 molecule

A

Octahedral

90°

B

Square planar

90°

C

Trigonal bipyramidal

120°

D

Tetrahedral

109.5°

Choose your answer

Did this page help you?

101 mark

Which substance is described in the table below?

Melting point

Electrical Conductivity

Solubility

Very high

Non-conductor

Does not dissolve

  • Silicon dioxide

  • Buckminsterfullerene

  • Graphite

  • Sodium chloride 

Choose your answer

Did this page help you?

11 mark

Which of the species shown below does not have resonance structures?

  • C6H6

  • CO32-

  • C2H4

  • O3

Choose your answer

Did this page help you?

21 mark

The correct molecular geometry and domain geometry for phosphorus trichloride, PCl3, is:

 

molecular geometry

domain geometry

A

trigonal planar

trigonal planar

B

trigonal pyramid

tetrahedral

C

tetrahedral

trigonal planar

D

tetrahedral

trigonal pyramid

Choose your answer

Did this page help you?

31 mark

Below are statements about the structure and bonding in silicon dioxide. Which pair of statements is correct?

 

structure

bonding

A

silicon dioxide molecules are bent linear

silicon atoms have covalent bonds to two oxygen atoms

B

silicon dioxide has a giant macromolecular structure

each oxygen bonds covalently to one silicon atom

C

silicon dioxide has a giant macromolecular structure

silicon atoms bond to four oxygen atoms

D

silicon dioxide molecules are linear

silicon and oxygen atoms are joined by a double covalent bond

Choose your answer

Did this page help you?

41 mark

Which compounds have an ionic lattice structure in the solid state?

  1.   silicon dioxide
  2.   sodium iodide
  3.   ammonium sulfate

  • I and II only

  • I and III only

  • II and III only

  • I, II and III

Choose your answer

Did this page help you?

51 mark

What is the correct shape of a ClF2- ion?

  • Linear

  • T-Shaped

  • Bent

  • Trigonal planar

Choose your answer

Did this page help you?

61 mark

The correct shape and bond angle for the TlBr32- ion?

 

Shape

Bond angle

A

Pyramidal

120°

B

Pyramidal

107°

C

Tetrahedral

109.5°

D

Tetrahedral

120°

Choose your answer

Did this page help you?

71 mark

Which of the following is correct for the molecules of BeCl2 and BeCl42-?

BeCl2

BeCl42-
 

Shape

Bond angle

Shape

Bond angle

A

Linear

109.5°

Square planar

90°

B

V-shaped

107°

Square planar

90°

C

V-shaped

105°

Tetrahedral

109.5°

D

Linear

180°

Tetrahedral

109.5°

Choose your answer

Did this page help you?

81 mark

Tramadol is an example of a painkiller which is classed as an opioid analgesic. It binds to opioid receptors in the central nervous system and inhibits noradrenaline and serotonin reuptake inhibiting pain transmission 

The structure is shown below 

Which of the following are the correct bond angles for a, b and c?

q8_4-2_ib_sl_hard_mcq

 

a

b

c

A

120o

109.5o

107o

B

120o

107o

105o

C

107o

109.5o

107o

D

109.5o

107o

105o

Choose your answer

Did this page help you?

91 mark

Some properties of substance X are given in the following table 

Melting Point

Very high

Strength

Very strong across the layer

Conductivity

Excellent conductor

Example of a Use

Used as a coating for smartphones, tablets and computers

What is a possible identity of substance X?

  • Graphene

  • Graphite

  • Silicon dioxide 

  • Buckminsterfullerene

Choose your answer

Did this page help you?

101 mark

Sulfur forms the compound S4N4 with nitrogen, the structure is shown below.q10_4-2_ib_sl_hard_mcq

  Which of the following statements about S4N4 is correct?

  • The sulfur atom marked x has two lone pairs

  • The sulfur atom marked y has two lone pairs

  • Each N atom has two lone pairs 

  • The N-S-N bond angle will be larger than S=N=S bond angle 

Choose your answer

Did this page help you?

11 mark

The following equation shows the dissociation equilibrium of PCl5. 

PCl5(g) → PCl3(g)  ＋ Cl2(g) 

The percentage yield of PCl3 varies with temperature. 

At 160°C PCl3 yield is 13% and at 300°C yield is100%. 

Which of the following rows is correct?

 

The reaction is

Shape of PCl3 molecule

A

exothermic

trigonal pyramidal

B

exothermic

trigonal planar

C

endothermic

trigonal pyramidal

D

endothermic

trigonal planar

Choose your answer

Did this page help you?

21 mark

Boron trifluoride, BF3, reacts with trimethylamine, (CH3)3N, to form a compound of formula (CH3)3N.BF3. 

How may this reaction be written using 3D structures to show  the shapes of the reactants and products?q2-1_14-2_ib_sl_medium_mcq

Choose your answer

Did this page help you?

31 mark

Which of the following statements about graphite are correct? 

  1.    The carbon atoms are joined together by three covalent bonds
  2.    Graphite contains delocalised electrons
  3.    The C-C-C bond angle is 109.5o

  • I and II only

  • I and III only

  • II and III only

  • I, II and III

Choose your answer

Did this page help you?

41 mark

Which statement below shows the correct information about diamond and silicon?

  • Diamond is macromolecular and silicon is simple molecular

  • The bond angles in the two structures are the same

  • The bond lengths are longer in C-C than in Si-Si

  • Diamond and silicon both conduct electricity due to delocalised electrons in their structure

Choose your answer

Did this page help you?

51 mark

How many lone pairs of electrons are there around the chlorine atom in a molecule of chlorine trifluoride, ClF3?

  • 1

  • 2

  • 3

  • 0

Choose your answer

Did this page help you?

61 mark

Which one of these species has a bond angle of 120°?

  • H3O+  

  • TlBr32-

  • BCl3

  • NH3 

Choose your answer

Did this page help you?

71 mark

Which of the following statements about silicon dioxide is correct? 

  1.    Silicon dioxide forms a giant covalent network
  2.    Each silicon atom is covalently bonded to four oxygen atoms
  3.    Silicon dioxide molecules are V-shaped

  • I and II only

  • I and III only

  • II and III only

  • I, II and III

Choose your answer

Did this page help you?

81 mark

Ibuprofen is an anti-inflammatory drug that is used for treating pain, fever and inflammation. The structure is shown below.q8_4-2_ib_sl_medium_mcq 

Ibuprofen

 What are the correct bond angles for a and b?

 

a

b

A

120o

120o

B

107o

109.5o

C

109.5o

120o

D

120o

109.5o

Choose your answer

Did this page help you?

91 mark

Which of the following molecules obeys the octet rule?

  • BF3

  • HCN

  • BeCl2

  • CS2

Choose your answer

Did this page help you?

101 mark

Which row in the table is correct?

 

Shape of diamond structure

Melting point of buckminsterfullerene

Bond angle in graphene

A

Square planar

Relatively high

90o

B

Tetrahedral

Relatively low

107o

C

Trigonal Planar

Relatively high

109.5o

D

Tetrahedral

Relatively low

120o

Choose your answer

Did this page help you?