ChemistryCode 9701
Ionisation energy
What this topic asks you to be able to do
- define the expression first ionisation energy, IE, and apply it
- construct equations showing the first, second and each later ionisation energy
- identify, and account for, how ionisation energies vary along a period and through a group of the Periodic Table
- identify, and account for, the differences between successive ionisation energies for a single element
- understand that the ionisation energies of an atom depend on how strongly its nucleus attracts the outer electron
- explain, with reference to spin-pair repulsion, shielding from inner shells and sub-shells, atomic/ionic radius and nuclear charge, why elements differ in ionisation energy
- deduce which electronic configurations elements have, drawing on successive ionisation energy data
- deduce where an element sits in the Periodic Table, drawing on successive ionisation energy data