Per NCERT §2.6.1, the azimuthal quantum number l takes which range of values for a given n, and what does it determine?
Al = n² — determines size
Bl = 0, 1, 2, …, (n − 1) — determines the three-dimensional SHAPE of the orbital (subshell s, p, d, f)
Cl = n + 1 only — determines spin
Dl = ±½ — determines mass
Answer & Solution
Correct answer: B. l = 0, 1, 2, …, (n − 1) — determines the three-dimensional SHAPE of the orbital (subshell s, p, d, f)
Per NCERT §2.6.1, l runs 0 to (n−1). l = 0 → s, l = 1 → p, l = 2 → d, l = 3 → f. Determines shape.
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