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.

Ionisation energy number Enthalpy /kJ mol-1
1st 502.9
2nd 965.2
3rd 3600

Ionisation energies of Ba

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.

Pointer to The Orbitron gallery of orbitals.

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

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barium atomic number