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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/Xa₀, where X= ______. (Where a₀ is the first Bohr's radius.)

Asked in JEE Main 2nd April 2nd Shift 2025 · Postulates, radius, speed and angular momentum

Answer: (3) 3

Step-by-step solution

rₙ=a₀(n²)/Z; for Li⁺⁺ Z=3, n=1.

r=(a₀)/3

Why the other options are wrong

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