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In a hypothetical hydrogen like atom, if transition of electron from n = 4 to n = 3 produces visible light, then the possible transition to obtain infrared radiation is

Options

  1. An = 5 to n = 3
  2. Bn = 4 to n = 2
  3. Cn = 3 to n = 1
  4. Dn = 5 to n = 4

Correct answer

D. n = 5 to n = 4

Step-by-step solution

Δ E should be less than E 4 – E 3 ⇒ n 1 = 5 , n 2 = 4

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