Iodine

Properties of iodine atoms

Ionisation Energies and electron affinity

The electron affinity of iodine is 295.2  kJ mol^-1. The ionisation energies of iodine 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 iodine in its compounds is not necessarily the same.

• Ground state electron configuration:  [Kr].4d¹⁰.5s².5p⁵
• Shell structure:  2.8.18.18.7
• Term symbol:   ²P_3/2

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

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