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  4. Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first excited state. The ratio of the wavelengths λ 1:λ 2 emitted in the two cases is

Q. Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first excited state. The ratio of the wavelengths emitted in the two cases is

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Solution:


According to Rydberg formula

In first case, nf = 3, ni = 4

In second case, nf = 2, ni = 3

Divide (ii) by (i) we get

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