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Calculate the wavelength of the second l...

Calculate the wavelength of the second line in Balmer series.

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`barv=(1)/(lambda)=109,677 ((1)/(n_(1)^(2)) -(1)/(n_(2)^(2))) cm^(-1) rArr (1)/(lambda)=109,677 cm^(-1) ((1)/(2^(2)) -(1)/(4^(2)))`
`lambda =4.8627xx10^(-5)cm =486.27nm`
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