Barium

Properties of barium atoms

Ionisation Energies and electron affinity

The electron affinity of barium is 13.95  kJ mol^-1. The ionisation energies of barium 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 barium in its compounds is not necessarily the same.

• Ground state electron configuration:  [Xe].6s²
• Shell structure:  2.8.18.18.8.2
• Term symbol:   ¹S₀

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

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