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JEE Main 2025 Jan 29 Shift 2, Chemistry Q2: Bohr's Atomic Model

JEE Main2025Jan 29, Shift 2Chemistry
Q.

For hydrogen like species, which of the following graphs provides the most appropriate representation of E vs Z plot for a constant n ?

[E : Energy of the stationary state,

Z : atomic number, n = principal quantum number]

  1. A

    1

  2. B

    2

  3. C

    3

  4. D

    4

Solution

For a hydrogen-like species the energy of the stationary state is

eV

For a fixed , is negative and varies as , so a plot of against is a downward-opening parabola lying entirely below the -axis. As increases, becomes more negative quadratically.

Option (2) matches this behaviour.

Concept behind this question

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