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JEE Main20252 Apr 2025Evening ShiftPhysicsAtomic PhysicsActual

Assuming the validity of Bohr's atomic model for hydrogen like ions the radius of Li ⁺⁺ ion in its ground state is given by 1 X a₀ , where X= _______. (Where a ₀ is the first Bohr's radius.)

Options

  1. A2
  2. B1
  3. C3
  4. D9

Correct answer

C. 3

Step-by-step solution

r = r ₀ n ^2 z & z =3 for Li ⁺² and n =1 r = r ₀ 1^2 3 = r ₀ 3 x =3

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