Properties of chlorine atoms

Ionisation Energies and electron affinity

The electron affinity of chlorine is 349.0  kJ mol-1. The ionisation energies of chlorine are given below.

Ionisation energy number Enthalpy /kJ mol-1
1st 1251.2
2nd 2298
3rd 3822
4th 5158.6
5th 6542
6th 9362
7th 11018
8th 33604
9th 38600
10th 43961
11th 51068
12th 57118
13th 63363
14th 72341
15th 78095
16th 352992
17th 380758

Ionisation energies of Cl

Electronic configuration

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

Pointer to The Orbitron gallery of orbitals.

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

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chlorine atomic number