Question

AP NTSE SURE SHOT SAT MO...
1 point
HEFTE
20. *Electrons pairing in orbitals starts only when available empty orbitals of the
same energy are singly occupied". This statement refers to
1) Pauli exclusion principle
2) Hund's rule
3) Aufbau principle
4) Quantum principle
O 1
O 2
O
3
O4​

Answer 1

Answer:

2.HUND'S RULE

Explanation:

PLEASE MARK ME AS BRAINLIEST