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Structure of Atom
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15/08/2021 11:48 am
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Which of the following is not permissible arrangement of electrons in an atom?
(a) n = 5, l = 3, m = 0, s = +1/2
(b) n = 3, l = 2, m = – 3, s = -1/2
(c) n = 3, l = 2, m = – 2, s = -1/2
(d) n = 4, l = 0, m = 0, s = -1/2
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15/08/2021 11:50 am
Correct answer: (b) n = 3, l = 2, m = – 3, s = -1/2
Explanation:
m = -l to +l, through zero thus for l = 2, values of m will be – 2, –1, 0, + 1, +2.
Therefore for l = 2, m cannot have the value -3.