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The maximum number of electrons in an atom in which the last electron filled has the quantum numbers \(n=3, I=2\) and \(m=-1\) is
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Dec 11, 2021
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Dec 16, 2021
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The maximum number of electrons in an atom in which the last electron filled has the quantum numbers \(n=3, I=2\) and \(m=-1\) is
(A) 17
(B) 27
(C) 28
(D) 30
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Ans : (D)
n = 3 and l = 2 means 3d-orbital. Since five orientations of d-orbitals are degenerate, m = –1 can be assigned to any one. For maximum number of electrons as asked, answer should be atomic number 30.
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