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1. What is the energy needed to excite the electron in hydrogen from n = 2 to n = 4? 2. What is the momentum
1. What is the energy needed to excite the electron in hydrogen from n = 2 to n = 4?
2. What is the momentum of a photon with E = 0.9 eV?
3. What is the wavelength of the photon in Question 2?
4. Suppose a electron is excited from the ground state by a photon with E = 7.5 eV. The electron needs 14 eV to ionize. What is the frequency of the photon it needs to absorb in order to ionize?
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