Possible set of quantum numbers for which: and is — Atomic Structure Chemistry Question
Question
Possible set of quantum numbers for which: $n = 4, l = 3$ and $s = +1/2$ is
Answer: B
💡 Solution & Explanation
The set is partially specified. With $l=3$, the magnetic quantum number $m$ can take values $-3, -2, -1, 0, +1, +2, +3$ (a total of $2l+1 = 7$ values). Since spin is fixed at $+1/2$, there are 7 fully defined sets of quantum numbers possible. Therefore, correct answer is B.
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