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Hydrogen atom in its ground state is excited by means of a monochromatic radiation of wavelength 970.6 Å. Different wavelengths are possible in the spectrum. After absorbing the energy of radiation, hydrogen atom goes to the excited state. After 10^(-8) s, the hydrogen atom will come to the ground state by emitting the absorbed energy. The electron of excited hydrogen atom is in which of the following energy states?

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Answer :d


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