Same chapter3 marksDifficulty: Medium
Write the electronic configuration of copper (Z = 29) and explain the anomaly.
Structure of Atom
3 marksDifficulty: Medium
State Hund's rule and the Aufbau principle.
Original Khojo Papers practice question — not from a past board paper.
Answer
The Aufbau principle states that electrons occupy the orbitals of lowest energy first. Hund's rule states that within a subshell every orbital is singly occupied before any is doubly occupied, and all the singly occupied orbitals have electrons of the same spin.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Together with the Pauli principle these three rules determine every electronic configuration.
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