Electrons In Atoms

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  • Light and its nature have caused a lot of ink to flow during these last decades. Its dual behavior is partly explained by (1)Double-slit experiment of Thomas Young - who represents the photon’s motion as a wave - and also by (2)the Photoelectric effect in which the photon is considered as a particle. A Revolution: SALEH THEORY solves this ambiguity and this difficulty presenting a three-dimensional trajectory for the photon's motion and a new formula to calculate its energy. More information on https://youtu.be/mLtpARXuMbM
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Electrons In Atoms

  1. 3. Bohr Model of the Atom
  2. 4. Wavelength & Frequency
  3. 5. Electromagnetic Spectrum
  4. 6. Photoelectric Effect
  5. 7. Photon Absorption & Emission
  6. 8. Light: Wave or Particle? <ul><li>Max Planck </li></ul><ul><ul><li>quanta </li></ul></ul><ul><li>Einstein </li></ul><ul><ul><li>photons </li></ul></ul><ul><li>Heisenberg </li></ul><ul><ul><li>uncertainty </li></ul></ul><ul><li>Schrodinger </li></ul><ul><ul><li>wave equation </li></ul></ul>
  7. 9. Chem Self-Quiz <ul><li>The atomic model of Niels Bohr was incorrect overall but was valid for the ___________ atom. </li></ul><ul><li>2. The charge on an atom is: </li></ul><ul><li>a) zero since the atom contains equal number of electrons and protons. </li></ul><ul><li>b) positive since the protons are much heavier than the electrons. </li></ul><ul><li>c) negative since the electrons are further out from the nucleus. </li></ul><ul><li>d) determined by the number of electrons the atom contains. </li></ul><ul><li>The visible line spectrum for hydrogen shows lines at wavelengths of 656 nm, 486 nm, 435 nm, and 410 nm. The wavelength of light with greatest frequency and energy is at ______________nm. </li></ul><ul><li>4. Visible light is produced in a hydrogen spectrum when the electron </li></ul><ul><li>a) falls to a lower energy level. </li></ul><ul><li>b) is excited to a higher energy level. </li></ul><ul><li>c) remains in an excited state for several seconds. </li></ul><ul><li>d) is removed from the atom. </li></ul><ul><li>5. Which color of light has the greatest amount of energy (shortest wavelength)? </li></ul><ul><li>a) Red b) Orange c) Purple d) Green </li></ul>
  8. 10. Chem Self-Quiz Answers
  9. 11. Quantum Model of the Atom

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