The electronic transitions resulting with the electron in the fourth orbit make up the Brackett series of lines in the emission spectrum. Calculate the wavelength of the lowest energy light and the wavelength of the highest energy light belonging to this series.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

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