Properties of beryllium atoms

Ionisation Energies and electron affinity

The electron affinity of beryllium is 0  kJ mol-1. The ionisation energies of beryllium are given below.

Ionisation energy number Enthalpy /kJ mol-1
1st 899.5
2nd 1757.1
3rd 14848.7
4th 21006.6

Ionisation energies of Be

Electronic configuration

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

Pointer to The Orbitron gallery of orbitals.

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

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beryllium atomic number