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CBSE Class 11 Chemistry
Bohr model, quantum numbers, electronic configuration.
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Open NCERT chapter ↗5 multiple-choice questions. Pick an option — instant feedback + one-line explanation. Answers don't leave your browser.
1Number of protons in ²³₁₁Na is:
2Quantum number that describes orbital shape:
3Aufbau principle:
4Maximum electrons in 3d orbital:
5Hund's rule:
Answer all 5 to submit.
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