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22. Electron in hydrogen atom first jumps from third excitedstate to second excited state and then from second excitedstate to first excited state. The ratio of wavelengths 11:12(b) 27/20(d) 20/7emited in two cases is[2012](a) 715(c) 2775

Answer»

Answer:

20/7

Explanation:

The ratio of wavelengths of photons EMITTED when hydrogen ATOM de-excites from THIRD EXCITED STATE to second excited state an then de-excites form seconds excited state to first excited state is 20/7

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