Properties of caesium atoms

Ionisation Energies and electron affinity

The electron affinity of caesium is 45.5  kJ mol-1. The ionisation energies of caesium are given below.

Ionisation energy number Enthalpy /kJ mol-1
1st 375.7
2nd 2234.3
3rd 3400

Ionisation energies of Cs

Electronic configuration

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

Pointer to The Orbitron gallery of orbitals.

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

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caesium atomic number