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In which shell does the first d orbital appear?
AFourth shell, n = 4
BSecond shell, n = 2
CFirst shell, n = 1
DThird shell, n = 3
Answer & Solution
Correct answer: D. Third shell, n = 3
Since l = 2 needs n − 1 to be at least 2, the first d orbital appears at n = 3.
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