Chapter 91 of 2363 min read

Quantum numbers, orbitals and their shapes

Why this is asked: Given a quantum number set, check l ≤ n−1 and |m| ≤ l first — that's where most "is this set possible" options actually fail. Total nodes equal n−1, split into l angular nodes and n−l−1 radial nodes, a formula NEET applies directly rather than just defining.

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Test yourself

•Match List I with List II.
List I (Quantum number) List II (Information provided)
A. $m_{l}$ I. Shape of orbital
B. $m_{s}$ II. Size of orbital
C. $l$ III. Orientation of orbital
D. $n$ IV. Orientation of spin of electron
Choose the correct answer from the options given below:

List I (Quantum number)	List II (Information provided)
A. $m_{l}$	I. Shape of orbital
B. $m_{s}$	II. Size of orbital
C. $l$	III. Orientation of orbital
D. $n$	IV. Orientation of spin of electron

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