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.

Ionisation energy number Enthalpy /kJ mol-1
1st 577.5
2nd 1816.7
3rd 2744.8
4th 11577
5th 14842
6th 18379
7th 23326
8th 27465
9th 31853
10th 38473
11th 42646
12th 201266
13th 222315

Ionisation energies of Al

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.

Pointer to The Orbitron gallery of orbitals.

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

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aluminium atomic number