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Which of the following set of quantum numbers is correct for the 19th electron of chromium:
n l m s
(a) 3 0 0 1/2
(b) 3 2 - 2 1/2
(c) 4 0 0 1/2
(d) 4 1 -1 1/2
Ans: 4 0 0 1/2
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