Question 1
Which of the species shown below does not have resonance structures?
C6H6
CO32-
C2H4
O3
0%
DP IB Chemistry: HL
Topic Questions
4.2 Resonance, Shapes & Giant Structures
Question 2
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 |
Question 3
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 |
Question 4
Which compounds have an ionic lattice structure in the solid state?
- silicon dioxide
- sodium iodide
- ammonium sulfate
I and II only
I and III only
II and III only
I, II and III
Question 5
What is the correct shape of a ClF2- ion?
Linear
T-Shaped
Bent
Trigonal planar
Question 6
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° |
Question 7
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° |
Question 8
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?
|
a |
b |
c |
|
|
A |
120o |
109.5o |
107o |
|
B |
120o |
107o |
105o |
|
C |
107o |
109.5o |
107o |
|
D |
109.5o |
107o |
105o |
Question 9
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
Question 10
Sulfur forms the compound S4N4 with nitrogen, the structure is shown below.
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
