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MHT CET202314 May 2023Morning ShiftChemistryStructure of AtomActual

Calculate radius of third orbit of He ⁺ .

Options

  1. A52.9 pm
  2. B105.8 pm
  3. C238.1 pm
  4. D423.2 pm

Correct answer

C. 238.1 pm

Step-by-step solution

r _ n = 52.9( n )^2 Z pm He ⁺ is a hydrogen-like species having Z =2 . Radius of the third orbit of He ⁺= r ₃= 52.9 (3)^2 2 pm =238.1 pm

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