Cerium

Properties of cerium atoms

Ionisation Energies and electron affinity

The electron affinity of cerium is 50  kJ mol^-1. The ionisation energies of cerium 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 cerium in its compounds is not necessarily the same.

• Ground state electron configuration:  [Xe].4f¹.5d¹.6s²
• Shell structure:  2.8.18.19.9.2
• Term symbol:   ¹G₄

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

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