Iridium

Properties of iridium atoms

Ionisation Energies and electron affinity

The electron affinity of iridium is 151.0  kJ mol^-1. The ionisation energies of iridium 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 iridium in its compounds is not necessarily the same.

• Ground state electron configuration:  [Xe].4f¹⁴.5d⁷.6s²
• Shell structure:  2.8.18.32.15.2
• Term symbol:   ⁴F_9/2

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

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