Properties of copper atoms

Ionisation Energies and electron affinity

The electron affinity of copper is 118.4  kJ mol-1. The ionisation energies of copper are given below.

Ionisation energy number Enthalpy /kJ mol-1
1st 745.5
2nd 1957.9
3rd 3555
4th 5536
5th 7700
6th 9900
7th 13400
8th 16000
9th 19200
10th 22400
11th 25600
12th 35600
13th 38700
14th 42000
15th 46700
16th 50200
17th 53700
18th 61100
19th 64702
20th 163700
21st 174100

Ionisation energies of Cu

Electronic configuration

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

Pointer to The Orbitron gallery of orbitals.

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

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copper atomic number