Actinium

Properties of actinium atoms

The electron affinity of actinium is no data  kJ mol^-1.

Ionisation Energies

This section includes ionisation energies of actinium.

Electronic configuration

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

• Ground state electron configuration:  [Rn].6d¹.7s²
• Shell structure:  2.8.18.32.18.9.2
• Term symbol:   ²D_3/2

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

WebElements Shop

WebElements now has an online shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.