JEE Main 2026 Chemistry question

Chemistry Structure of Atom JEE Main 2026

Which of the following is correct set of 4 quantum numbers of 19th electron in Chromium (Atomic number = 24) in accordance with Aufbau principle?

(A)n=3, l=2, m=+2, s=+1/2
(B)n=3, l=2, m=−2, s=+1/2
(C)n=4, l=1, m=0, s=+1/2
(D)n=4, l=0, m=0, s=+1/2Correct

Answer: (D)

Solution

Following strict Aufbau (ignoring Cr's real exception), electrons 19 and

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Question ID VK-015312