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.

Ionisation energy number Enthalpy /kJ mol-1
1st 1008.4
2nd 1845.9
3rd 3180

Ionisation energies of I

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.

Pointer to The Orbitron gallery of orbitals.

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

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iodine atomic number