A line in the Brackett series of hydrogen has a wavelength of 4052 nm. From what state did the electron originate? n_i = In what region of the electromagnetic spectrum is this line observed? radio gamma rays visible X rays microwaves ultraviolet infrared
wavenumber = 109677(1/n1^2 – 1/n2^2) (n2>n1)
wavenumber = 1/ wavelength
n1 = final energy level = 4(bracket series) , n2 = ?
(1/(4.052*10^-4)) = 109677((1/4^2)-(1/x^2))
x = ni = initial position of electron = 5
electromagnetic spectrum of 4052 nm = infrared
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