Question

Atomic hydrogen produces a well-known series of spectral lines in several regions of the electromagnetic spectrum. Each series fits the Rydberg equation with its own particular n_{1 value. Calculate the value of n1 that would produce a series of lines in which the highest energy line has a wavelength of 365 nm.}

Answer 1

365nm = 365*10^-7cm

RH   = 109678cm^-1

n2 = infinate

1/   = RH(n1^2-1/n2^2)

1/365*10^-7   = 109678(1/n1^2 -1/^2)

1/365*10^-7   = 109678(1/n1^2 -0)

1/n1^2          = 1/365*10^-7 *109678

1/n1^2         = 0.25

n1^2        = 1/0.25

n1^2       = 4

n1          = 2 (Balmer series) visible region >>>>answer