Which of the following set of quantum numbers is not valid?(a) n = 5, l = 2, m = 0, s = 1/2(b) n = 1, l = 2, m = 0, s = 1/2(c) n = 5, l = 3, m = 2, s = 1/2(d) n = 5, l = 2, m = 0, s = -1/2I have been asked this question in an internship interview.My question is taken from Quantum Mechanical Model of Atom topic in division Structure of Atom of Chemistry – Class 11

Which of the following set of quantum numbers is not valid?(a) n = 5,

1.	Which of the following set of quantum numbers is not valid?(a) n = 5, l = 2, m = 0, s = 1/2(b) n = 1, l = 2, m = 0, s = 1/2(c) n = 5, l = 3, m = 2, s = 1/2(d) n = 5, l = 2, m = 0, s = -1/2I have been asked this question in an internship interview.My question is taken from Quantum Mechanical Model of Atom topic in division Structure of Atom of Chemistry – Class 11
Answer» RIGHT OPTION is (b) n = 1, l = 2, m = 0, s = 1/2 To explain: The set of quantum number n = 1, l = 2, m = 0, s = 1/2, is not valid because the value of azimuthal quantum number should lie only in between 0 and n-1, where n is principal quantum number. So the above set of quantum numbers is not valid.

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