In a discharge tube, radium atoms emit light as they undergo transitions from one energy level to another that is 4.113 x 10^-19 J lower in energy. Calculate the wavelength of the light emitted and by referring to the figure to the right, predict the color of the line in the discharge spectrum. Wavelength = m Color: 400 nm Violet Blue 500 nm Green Yellow 600 nm Orange Red 700 nm
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