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The last member of Lymann series of Hydr...

The last member of Lymann series of Hydrogen atom is `912Å` Calculate The wavelength of series limit of blamer series.

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Rydberg formula for the wavelengths of spectral lines in hydrogen spectrum is
`(1)/(lamda)=R((1)/(n_(f)^(2))-(1)/(n_(i)^2))`
`:.R=(1)/(913.4Å)`
`:.` The short wavelength limit `lamda_(B)` for the Lyman series would be
`(1)/(lamda_(B))=R((1)/(oo^(2))-(1)/(2^(2)))=(R)/(4)`
`:.lamda_(B)=(4)/(R)=4xx913.4Å`
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