Chemistry · 2026
JEE Main · 4 April 2026, Shift 1 · Q53
Which of the following is correct set of 4 quantum numbers of 19^th electron in Chromium (Atomic number =24 ) in accordance with Aufbau principle?
Which of the following is correct set of $\displaystyle 4$ quantum numbers of $\displaystyle 19^{\text {th }}$ electron in Chromium (Atomic number $\displaystyle =24$ ) in accordance with Aufbau principle?
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle n=4, l=0, m=0, s=+\frac{1}{2}$
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.