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If the longest wavelength of the ultraviolet region of hydrogen spectrum is lambda_(0) then the shortest wavelength of its infrared region is ...... |
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Answer» `(46)/(7)lambda_(0)` `:.(1)/(lambda_(0))=R[(1)/(l^(2))-(1)/(n^(2))]` `=R[1-(1)/(4)]` `(1)/(lambda_(0))=(3R)/(4) .....(1)` For minimum wavelength of infrared spectrum for Paschen series, n = 0 `(1)/(lambda)=R[(1)/(3^(2))-(1)/(n^(2))]` `=R[(1)/(9)-(1)/(OO^(2))]` `=(R)/(9)....(2)` By taking ratio of (1) and (2) `(lambda)/(lambda_(0))=(3R)/(4)xx(9)/(R)` `:. lambda=(27)/(4)lambda_(0)` |
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