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Consider the following energy levels of a hypothetical atom: E42.511019JE34.711019JE21.351018JE11.851018J (a) What is the wavelength of the photon needed to excite an electron from E1

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Consider the following energy levels of a hypothetical atom: E42.511019JE34.711019JE21.351018JE11.851018J (a) What is the wavelength of the photon needed to excite an electron from E1 to E4 ? 10m (b) What is the energy (in joules) a photon must have in order to excite an electron from E2 to E3 ? 10 (c) When an electron drops from the E3 level to the E1 level, the atom is said to undergo emission. Calculate the wavelength of the photon emitted in this process. 10m

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