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Calculate the wavelength in nanometers of the light emitted

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Reference no: EM13595564

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n=7 to the n=4 principal energy leve.

a. 4.45 * 10^-20nm

b. 2.17 * 10^-6nm

c. 9.17 * 10^-20 nm

d. 1.38 * 10^14 nm

e. 2.17 * 10^3 nm

Reference no: EM13595564

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