Quantum numbers and orbitals
Master the four quantum numbers, their rules, permissible values, and how they specify orbitals and electron arrangements.
Why this shows up in the exam
Exams test your ability to assign quantum numbers, determine orbital types, and understand electron placement.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is
Push further
More challenging4 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
A subshell is characterized by having 5 possible orientations in space. What is the azimuthal quantum number (l) of this subshell?
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