Calculate the wavelenght of radiation emitted , producing a line in Lyman series , when n electron falls freom fourth stationary state in hydrogen atom .

Explanation

`(1)/lambda=RZ^(2)[(1)/n_(1)^(2)-(1)/(n_(2)^(2)]]`
`(1)/lambda=R[(1)/1^(2)-(1)/4^(2)] `
` lambda=9.78xx10^(-8)" " (For H- atom,Z=1,Lyman series,`n_(1)=1`)