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10-03-2024
Chemistry

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Consider the following energy levels of a hypothetical atom: E4 -1.31 x 10^-19J E3 -5.41 x 10^-19J E2 -1.25 x 10^-18J E1 -1.85 x 10^-18J (a) What is the wavelength of a photon needed to excite an electron from E1 to E4? (b) what is the energy (in joules) a photon must have in order to excite an electron from E2 to E3?

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