Extremadura PAU Chemistry Practice Questions - Extremadura PAU Chemistry Exam - Química 2o Bachillerato UEx 2026 Exam

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Which set of quantum numbers (n, l, ml, ms) is valid for the highest-energy valence electron of a ground-state chlorine atom (Z = 17)?

(2, 1, -1, +1/2) (3, 2, 0, -1/2) (3, 0, +1, +1/2) (3, 1, 0, +1/2)

Correct Answer:

(3, 1, 0, +1/2)

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