Question

Electron occupies the available orbital singly before pairing in any one orbital occurs, it is

• A. Pauli's exclusion principle
• B. Hund's Rule
• C. Heisenberg's principle
• D. Prout's hypothesis

Answer 1

The correct option is B

Hund's Rule

The Hund’s rule tells us that:

1. Before the double occupation of any orbital every orbital in the sub level is singly occupied.
2. For the maximization of total spin all electrons in a single occupancy orbital have the same spin