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NEET2011ChemistryStructure of AtomActual

According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?

Options

  1. An=6 to n=1
  2. Bn=5 to n=4
  3. Cn=6 to n=5
  4. Dn=5 to n=3

Correct answer

C. n=6 to n=5

Step-by-step solution

E [ 1 n₁^2 - 1 n₂^2 ] , where n₂>n₁ Energy of photon obtained from the transition n=6 to n=5 will have least energy.

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