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In a hydrogen like ion, the energy difference between the 2^ nd excitation energy state and ground is 108.8 eV. The atomic number of the ion is

Options

  1. A4
  2. B2
  3. C1
  4. D3

Correct answer

D. 3

Step-by-step solution

E =13.6 z ^2 [ 1 n ₁^2 - 1 n ₂^2 ] (13.6) z ^2 [ 1 1 - 1 9 ]=108.8 (13.6)(8) 9 (z^2 )=108.8 z =3

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