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(a) An atom initally in an energy level...

(a) An atom initally in an energy level with E = - 6.52 eV absorbs a photon that has wavelength 860 nm. What is the internal energy of the atom after it absorbs the photon?
(b) An atom initially in anergy level with E =-2.68 ev emits a photon that has wavelength 420 nm. What is the internal energy of the atom after it emits the photon?

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