Structure of Atom

JEE Main · Chemistry · 14 past questions

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1. Q1 2026 2 Apr Shift 1

   What is the energy (in J atom$^{-1}$) required for the following process ?…

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2. Q2 2026 2 Apr Shift 2

   The surface of sodium metal is irradiated with radiation of wavelength $x$ nm. The kinetic energy of ejected…

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3. Q3 2026 4 Apr Shift 1

   What is the ratio of wave number of first line (lowest energy line) of Balmer series of H atomic spectrum to…

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4. Q4 2026 4 Apr Shift 1

   Which of the following is correct set of 4 quantum numbers of 19$^{th}$ electron in Chromium (Atomic number =…

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5. Q5 2026 4 Apr Shift 1

   A monoatomic anion (A$^-$) has 45 neutrons and 36 electrons. Atomic mass, group in the periodic table and…

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6. Q6 2026 4 Apr Shift 2

   The species having identical radii according to the Bohr's theory are…

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7. Q7 2026 4 Apr Shift 2

   Pairs of elements with the same number of electrons in their respective 4f orbital are…

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8. Q8 2026 5 Apr Shift 1

   Arrange the following atomic orbitals of multi electron atoms in order of increasing energy.…

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9. Q9 2026 5 Apr Shift 1

   Identify the **correct** statements from the following…

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10. Q10 2026 5 Apr Shift 2

    Which of the following statement(s) is/are true ?…

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11. Q11 2026 6 Apr Shift 1

    If shortest wavelength of hydrogen atom in Lyman series is $x$, then longest wavelength in Balmer series of…

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12. Q12 2026 6 Apr Shift 1

    Match the LIST-I with LIST-II…

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13. Q13 2026 6 Apr Shift 2

    The Bohr radius of a hydrogen like species is 70.53 pm. The species and the stationary state (n) are…

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14. Q14 2026 8 Apr Shift 2

    Consider two radiations of wavelengths…

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