Ionisation
Energy
Ionisation energy in AQA 3.1.1 links atomic structure to electron configuration. These pages cover the definition of first ionisation energy, equations for first and successive ionisation energies, and how ionisation energy evidence supports the arrangement of electrons in shells and sub-shells.
Revision Notes
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Introduction to Ionisation Energy
Definition of first ionisation energy, gas-state equations, nuclear attraction, shielding, atomic radius and key trend explanations.
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Successive Ionisation Energies
Successive ionisation equations, large jumps, electron shell evidence and using Period 3 and Group 2 data to support electron configurations.
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Electron Configuration Map
AQA A-level Chemistry · 3.1.1 Atomic structure: electron configuration and ionisation energy
Orbitals and sub-shells, configurations, ions and blocks, ionisation energies and the evidence for sub-shells and shells on one A4 page.
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3.1.1.3
- iv b
explain how successive ionisation energies in Group 2 (Be-Ba) give evidence for electron configuration in shells
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