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Calculate the wave number of the first s...

Calculate the wave number of the first spectral line in the Lyman series of `He^(+)` spectrum

Text Solution

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For first line in Lyman series,
`n_(1)` = lower energy = 1
`n_(2)` = higher energy = 2
Wave number `(bar(V))` is given by the equation
`bar(v) = Z^(2)R_(H)((1)/(1^(2)) - (1)/(2^(2))) = 4 xx 109677 xx (3)/(4) = 329031 cm^(-1)`
Wave number of first line in Lyman series of `He^(+)` is `3.29 xx 10^(5) cm^(-1)`
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