Properties of potassium atoms

Ionisation Energies and electron affinity

The electron affinity of potassium is 48.4  kJ mol-1. The ionisation energies of potassium are given below.

Ionisation energy number Enthalpy /kJ mol-1
1st 418.8
2nd 3052
3rd 4420
4th 5877
5th 7975
6th 9590
7th 11343
8th 14944
9th 16963.7
10th 48610
11th 54490
12th 60730
13th 68950
14th 75900
15th 83080
16th 93400
17th 99710
18th 444870
19th 476061

Ionisation energies of K

Electronic configuration

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

Pointer to The Orbitron gallery of orbitals.

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

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potassium atomic number