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Explain why the quantum number set (3, 2, 3, -½) is not possible for an electron in an atom.
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Explain why the quantum number set (3, 2, 3, -½) is not possible for an electron in an atom.

User JohnEye
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The third quantum number, m, must be an integer between -l and l, where l is the second quantum number.
Here l=2, so m can be equal to -2, -1, 0, 1, or 2. The value of 3 is not possible.
User Hal Burgiss
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