Ques. 1JEE Main 2025, 8 April (Evening Shift)
The energy of an electron in the first Bohr orbit of the H-atom is -13.6 eV. The magnitude of energy value of an electron in the first excited state of Be3+ is eV (nearest integer value).
Structure of Atom
Previous year questions with solutions · 2025 – 2026
39Questions
31Papers covered
5.47%Weightage 2026▲ 26.3% vs last year
Year-wise statistics questions · papers · average per paper · weightage
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 26 | 19 | 1.4 | 5.47% ▲ 26.3% vs last year |
| 2025 | 13 | 12 | 1.1 | 4.33% |