Question: (1). An atom initially in an energy level with E = -6.52eV absorbs a photon that has wavelength 860 nm. What is the internal energy

(1). An atom initially in an energy level with E = -6.52eV absorbs a photon that has wavelength 860 nm. 

What is the internal energy of the atom after it absorbs the photon?

(2). An atom initially in an energy level with E = -2.68eV 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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