Aluminium

Properties of aluminium atoms

Ionisation Energies and electron affinity

The electron affinity of aluminium is 42.5  kJ mol^-1. The ionisation energies of aluminium are given below.

Electronic configuration

The following represents the electronic configuration and its associated term symbol for the ground state neutral gaseous atom. The configuration associated with aluminium in its compounds is not necessarily the same.

• Ground state electron configuration:  [Ne].3s².3p¹
• Shell structure:  2.8.3
• Term symbol:   ²P_1/2

A schematic representation of the shell structure of aluminium - not what the atom of aluminium "looks like".

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