Homework_3_Sep 21_2015 - 1.Estimate the wavelengths of the...

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1.Estimate the wavelengths of the first three spectral lines in the Lyman spectral series for hydrogen. What energies (eV) do photons with these wavelengths have? 2. Consider an electron in the first Bohr orbit of a hydrogen atom. (a) What is the radius (in meters) of this orbit? (b) What is the total energy (in eV) of the electron in this orbit? (c) How much energy is required to ionize a hydrogen atom when the electron is in the ground state? 3. What photon energy (eV) is required to excite the hydrogen electron in the innermost (ground state) Bohr orbit to the first excited orbit?
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4. Calculate the classical radiation loss (Larmor’s formula) from an electron bound in hydrogen atom in units of eV/s. Assume that the electron is following a circular orbit with radius of 5x10 m at a speed of 2x10 m/s. Comment on the primary issue of the planetary atomic model, which should be apparent from your result. Larmor’s formula for total radiated power of a particle with charge q, with acceleration x ̈ is 5.Balance the centrifugal and electrostatic force to demonstrate that the ionization potentials of
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  • Fall '08
  • KIM,SEUNGJIN
  • Atom, Electron, Fundamental physics concepts, Hydrogen atom, nucleon

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