Chemistry A-Level
Ionisation enthalpy
What Ionisation enthalpy means in Chemistry A-Level, as defined for OCR.
Definition of Ionisation enthalpy
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Reference: OCR
The metal is ionised, using first and, for Mg, second ionisation enthalpy, and both first and second steps are included for a 2⁺ ion.
Topics that use Ionisation enthalpy
- Lattice enthalpy (OCR A-Level)
Related terms
- Born–Haber cycle
- Effect of ionic charge and radius on lattice enthalpy
- Electron affinity
- Enthalpy change of hydration
- Enthalpy change of solution
- Enthalpy of atomisation
- enthalpy of formation
- Enthalpy sign and exothermic formation
Using Ionisation enthalpy in the exam
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