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What is a set of correct quantum numbers (n, ℓ, ml) for the last electron of P^-? 1. 3, 1, 1 2. 2, 0, 0 3. 3, 2, 1 4. 3, 0, 0 5. 3, 2, 0 6. 2, 1, 1 7. 2, 0, 1 8. 3, 1, -2