Question

An electron begins in the n=5 energy level in the Hydrogen atom. It then loses some energy, falling to the n=2 energy level. Since the electron is still not in the most stable energy state, it then loses more energy and falls into the n=1 energy level. The wavelength of the photon emitted during the n=5 to n=2 transition is 435 nm. A. What is the energy of the photon emitted during the n=2 to the n=1 transition? B. What is the de Broglie wavelength of an electron traveling at a speed of 0.8c? C. If you replace the electron in the previous question with a proton traveling at a speed of 0.8c, how would the de Broglie wavelength change? Would the proton's wavelength be smaller or larger than the electron's wavelength?

          An electron begins in the n=5 energy level in the Hydrogen atom. It then loses some energy, falling to the n=2 energy level. Since the electron is still not in the most stable energy state, it then loses more energy and falls into the n=1 energy level. The wavelength of the photon emitted during the n=5 to n=2 transition is 435 nm.

A. What is the energy of the photon emitted during the n=2 to the n=1 transition?
B. What is the de Broglie wavelength of an electron traveling at a speed of 0.8c?
C. If you replace the electron in the previous question with a proton traveling at a speed of 0.8c, how would the de Broglie wavelength change? Would the proton's wavelength be smaller or larger than the electron's wavelength?

Added by Anna R.

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