Phase

Spin State

Relative Energy

Binding Energy

Enthalpy

Fe²⁺

LS

12.15

203.53

206.73

IS

9.29

206.40

210.50

HS

0

215.69

219.74

Fe³⁺

LS

7.40

511.75

515.24

IS

6.57

512.59

516.94

HS

0

519.15

523.47