Oxygen

Properties of oxygen atoms

Ionisation Energies and electron affinity

The electron affinity of oxygen is 141  kJ mol^-1. The ionisation energies of oxygen 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 oxygen in its compounds is not necessarily the same.

• Ground state electron configuration:  [He].2s².2p⁴
• Shell structure:  2.6
• Term symbol:   ³P₂

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

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