An electron revolves round a nucleus of charge Ze. In order to excite – InterviewSolution

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1.	An electron revolves round a nucleus of charge Ze. In order to excite the electron from the `n=20` to `n=3`, the energy required is `47.2 eV`. Z is equal toA. 3B. 4C. 5D. 2
Answer» Correct Answer - C `Z^(2)[(13.6)/(4)-(13.6)/(9)]=47.2 ` ` :. " " Z=5`

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