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AIIMS2019ChemistryStructure of Atom

If n=2 for He ⁺ ion then find out the wave length.

Options

  1. A3.32 Å
  2. B6.42 Å
  3. C1.47 Å
  4. D2.37 Å

Correct answer

A. 3.32 Å

Step-by-step solution

aligned & 2 r=n & 2 0.529 n^2 Z =n & = 2 0.529 n Z = 2 3.14 0.529 2 2 & =3.32 Å aligned

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