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  • Which of the following is not permissible arrangement of electrons in an atom?Option: 1 n = 5, <img alt="\ell" src="https://entrance

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

Option: 1

n = 5, \ell = 3, m = 0, s = + 1/2


Option: 2

n = 3, \ell = 2, m = -3, s = - 1/2


Option: 3

n = 3, \ell = 2, m = -2, s = - 1/2


Option: 4

n = 4, \ell = 0, m = 0, s = - ?


Answers (1)

best_answer

For an electron, n may be 1, 2....and l = 0 to (n - 1) and m = -l to l  (including 0) and s = -1/2, +1/2 .

n = 3, l = 2, m = -3, s = - 1/2 is not permissible arrangement of electrons in an atom. because if l = 2 then m can take the value from -2 to +2. 

Therefore, the correct option is (2).

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