Calculate the wavelength in nanometers of the spectral line in the visible spectrum of hydrogen for which n1 = 2 and n2 = 3. What color is this line?
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The Rydberg formula that governs emissions in the atom is:
1/L = R * Z^2 * (1/nf^2 - 1/ni^2)
L: the wavelength of teh emmited (absorbed) photon.
R is the Rydberg constant: R = 1.1 * ...
Solution attaches the calculations for finding the wavelength of a spectral line and matching that to a color, with some explanation.