1a2 marks
Aluminium is an abundant metal with many uses.
The first four ionisation energies of aluminium are shown.
| Ionisation number | Energy / kJ mol−1 |
| 1 | 578 |
| 2 | 1820 |
| 3 | 2750 |
| 4 | 11600 |
Explain how this information shows that aluminium is in Group 3 of the Periodic Table.
1b4 marks
The graph shows the first ionisation energies for the elements in Period 3.
i)
Explain the general increase in the first ionisation energy from sodium to argon.
(2)
ii)
Explain why the first ionisation energy of aluminium is less than the first ionisation energy of magnesium.
(2)
1c4 marks
i)
Describe the bonding in aluminium metal.
(2)
ii)
Give two possible reasons why aluminium is used for overhead power cables.
(2)
1d3 marks
New uses for waste aluminium cans are being investigated. One possible use is to make nanoparticle alloys to produce hydrogen for fuel.
i)
Aluminium nanoparticles react with water to produce aluminium oxide and hydrogen.
Complete the following equation. State symbols are not required.
(1)
.................... Al + ............... H2O → .................. + ..................
ii)
Give two possible reasons for producing hydrogen from aluminium rather than from fossil fuels.
(2)
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