Astatine

Properties of astatine atoms

The electron affinity of astatine is 270.1  kJ mol^-1.

Ionisation Energies

This section includes ionisation energies of astatine.

Electronic configuration

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

• Ground state electron configuration:  [Xe].4f¹⁴.5d¹⁰.6s².6p⁵
• Shell structure:  2.8.18.32.18.7
• Term symbol:   ²P_3/2

A schematic representation of the shell structure of astatine - not what the atom of astatine "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.