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The wavelength of the spectral line when...

The wavelength of the spectral line when the electron is the hydrogen atom undergoes a transition from the energy level `4` to energy level `2` is.

Text Solution

Verified by Experts

According to Rydberg equation,
`(1)/(lamda)=R((1)/(x^(2))-(1)/(y^(2)))`
`R=109678cm^(-1),x=2,y=4`
`(1)/(lamda)=109678[(1)/(4)-(1)/(16)]`
`=109678xx(3)/(16)`
On solving `lamda=486nm`
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