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Chapter 8 Journey Inside the Atom - Part 1

Which rule states that electrons occupy degenerate orbitals singly first?

Type: MCQ • Marks: 1
Which rule states that electrons occupy degenerate orbitals singly first?
Options
A. Hund's rule
B. Pauli exclusion principle
C. Aufbau principle
D. Octet rule
Explanation
Hund's rule says electrons fill equal-energy orbitals singly before pairing.
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Class 9th Science (MCQ)

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