11 mark
“Electrostatic attraction between cations and delocalised electrons”
Which of the following bonds does the statement best describe?
Hydrogen
Ionic
Dipole
Metallic
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Metallic Bonding (CIE A Level Chemistry)
Exam Questions
30 mins12 questions21 mark
Which of the following materials only contain one type of bond in solid form?
Ammonium chloride
Brass (an alloy of zinc and copper)
Ice
Iodine crystals
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31 mark
Why can copper conduct electricity?
Positive ions can move through the structure
Delocalised electrons can move through the structure
There is an electrostatic attraction between positive ions and delocalised electrons
The layers of ions can slide over each other
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11 mark
Metallic bonding contributes to which of the following properties of metals?
malleability and ductility
brittle nature
low electrical conductivity
low melting and boiling points
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21 mark
Which factor contributes to the high thermal conductivity of metals?
strong covalent bonds
weak metallic bonds
free movement of electrons
presence of ions
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31 mark
What happens to the metallic bonds when a metal is hammered into thin sheets?
the metallic bonds break
the metallic bonds become stronger
the metallic bonds rearrange
the metallic bonds remain unchanged
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11 mark
Sodium and magnesium are both period 3 elements.
Compared to sodium, why is magnesium more reactive?
|
Magnesium has a smaller atomic radius |
Magnesium has a larger nuclear charge |
Stronger nuclear attraction for electrons |
|
|
A |
✓ |
✓ |
✓ |
|
B |
✓ |
⨯ |
⨯ |
|
C |
⨯ |
⨯ |
✓ |
|
D |
✓ |
✓ |
⨯ |
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21 mark
Which of the following metals will have the greatest ability to conduct electricity?
Li
Mg
Na
Al
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31 mark
In which of the following compounds is the anion most polarised?
LiF
LiI
KF
KI
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