Here N is the number of electrons having parallel spins As

Last updated: 7/4/2023

Here N is the number of electrons having parallel spins As the number of parallel spins increases the exchange energy also increases The exchange means the shifting of electrons from one orbital to another in the same sub shell This can be easily illustrated by considering chromium as example If the configuration is 3d 4s N is taken as 5 and C pairs of electrons equal to 10 is possible The exchange energy is 10K If the configuration is 3d5 4s N is taken as 6 and C pairs of electrons equal to 15 is possible The exchange is 15K