Physics · 2025
JEE Main · 7 April 2025, Shift 1 · Q44
In a hydrogen like ion, the energy difference between the 2^nd excitation energy state and ground is 108.8 eV. The atomic number of the ion is:
In a hydrogen like ion, the energy difference between the $\displaystyle 2^{\text {nd }}$ excitation energy state and ground is $\displaystyle 108.8$ eV . The atomic number of the ion is:
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 3$
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.