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Hund’s Rule states:

Practice MCQ for SSC, UPSC, RRB Exams

A. Electrons pair up first A.

B. Lower orbitals fill last B.

C. Degenerate orbitals are filled singly first C.

D. Electrons spin clockwise only D.

Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

Hund’s Rule ensures maximum multiplicity: electrons fill all orbitals of a subshell singly before pairing.

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