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Score full marks on Class 11 Chemistry: Aufbau principle, Hund's rule, Pauli exclusion principle, and de Broglie matter waves.
Atomic Structure in Class 11 introduces quantum mechanical models of electron probability distributions.
Principal ($n$), Azimuthal ($l$), Magnetic ($m$), and Spin ($s$). Practice identifying permissible sets of quantum numbers and explaining electronic configurations of transition elements with anomalous half-filled $d$-subshells (Chromium and Copper).
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