Which of the following is not permissible arrangement of electrons in an atom ?

1. A. n=3, l=2, m=-3, s=- 1 2
2. B. n=4, l=0, m=0, s=- 1 2
3. C. n=5, l=3, m=0, s=+ 1 2
4. D. n=3, l=2, m=-3, s= 1 2

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