Properties of magnesium atoms

Ionisation Energies and electron affinity

The electron affinity of magnesium is 0  kJ mol-1. The ionisation energies of magnesium are given below.

Ionisation energy number Enthalpy /kJ mol-1
1st 737.7
2nd 1450.7
3rd 7732.7
4th 10542.5
5th 13630
6th 18020
7th 21711
8th 25661
9th 31653
10th 35458
11th 169988
12th 189367.7

Ionisation energies of Mg

Electronic configuration

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

Pointer to The Orbitron gallery of orbitals.

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

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magnesium atomic number