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Question
Which of the following is not permissible arrangement of electrons in an atom ?
n = 5, $l$ = 3, m = 0, s = +1/2
n = 3, $l$ = 2, m = $-$ 3, s = $-$1/2
n = 3, $l$ = 2, m = $-$ 2, s = $-$1/2
n = 4, $l$ = 0, m = 0, s = $-$1/2

Solution

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