Question

what do you mean by hund's rule.??​

Answer 1

Answer:

Hund's Rule states that.....

the pairing of electrons in the orbitals of same subshell (..p..d..f..) will take place only when each orbital of that sabse gets one electron each with their spin parallel..

Answer 2

What do you mean by hund's rule?

Every orbital in a sublevel is singly occupied before any orbital is doubly occupied.

This rule was invented by Friedrich Hermann Hund.