"the loss of exchange energy increases the stability " What does loss of exchange energy means because if exchange energy - Chemistry - The d-and f-Block Elements

Question

"the loss of exchange energy increases the stability " What does
loss of exchange energy means because if exchange energy decrease
then stability decrease and IE also decreases Aldo explain this
paragraph

Md Nazrullah · Accepted Answer

Dear Student,

Exchange energy:

The stabilising effect arises whenever two or more electrons with
the same spin are present in the degenerate orbitals of a subshell
These electrons tend to exchange their positions and the energy
released in this process is called the exchange energy

The maximum number of exchanges can take place when the subshell is
either half-filled or completely-filled

E g , In the case of Cr, when the configuration is
3d5, the electrons can be exchanged in ten
ways:

Hope this helps

Best Wishes!

"the loss of exchange energy increases the stability." What does loss of exchange energy means because if exchange energy decrease then stability decrease and IE also decreases . Aldo explain this paragraph