A) Pauli's exclusion principle
B) Hund's rule
C) Aufbau's principle
D) Uncertainty principle
Correct Answer: B
Solution :Hund?s rule states that pairing of electrons in the orbitals of a subshell (orbitals of equal energy) starts when each of them is singly filled.
You need to login to perform this action.
You will be redirected in 3 sec