Rutherford Model Shortcomings in Classical Electromagnetic Theory
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Questions and Answers

Why does the classical electromagnetic theory predict a continuous spectrum, in contradiction to the line spectrum actually observed?

  • Because the frequency of the electromagnetic waves emitted by revolving electrons is equal to their frequency of revolution.
  • Because the angular velocities of electrons continuously change as they spiral inwards.
  • Because the classical ideas are not sufficient to explain atomic structure.
  • Because the frequency of the light emitted changes continuously as the electrons spiral inwards. (correct)
  • What does the classical electromagnetic theory imply about the relationship between the frequency of electromagnetic waves and the revolution of electrons?

  • Their relationship fluctuates.
  • They are inversely proportional.
  • They have no relationship.
  • They are equal. (correct)
  • Why does the Rutherford model only tell a part of the story regarding atomic structure?

  • Because it doesn't address the behavior of electrons in atomic orbits.
  • Because it fails to explain why electrons spiral inwards.
  • Because classical ideas alone are insufficient to explain atomic structure. (correct)
  • Because it doesn't consider the wave nature of electrons.
  • According to classical electromagnetic theory, what happens to the frequency of light emitted as electrons spiral inwards?

    <p>It decreases continuously.</p> Signup and view all the answers

    What is the initial frequency of light emitted according to classical electromagnetic theory when an electron revolves around a proton in a hydrogen atom?

    <p>$6.6 \times 10^{15}$ Hz</p> Signup and view all the answers

    In what way does the concept of quantum hypothesis challenge the classical electromagnetic theory's explanation of atomic structure?

    <p>By proposing that electrons can only exist in fixed energy orbits.</p> Signup and view all the answers

    What did J.J. Thomson's experiments on electric discharge through gases reveal about atoms?

    <p>Atoms contain negatively charged electrons that are identical for all atoms.</p> Signup and view all the answers

    In J.J. Thomson's plum pudding model, how is the positive charge distributed within the atom?

    <p>Uniformly throughout the volume of the atom.</p> Signup and view all the answers

    Which subsequent model of the atom showed that the distribution of electrons and positive charges is different from Thomson's plum pudding model?

    <p>Rutherford model</p> Signup and view all the answers

    What key aspect of an atom did the Rutherford model focus on?

    <p>Distribution of electrons and positive charges</p> Signup and view all the answers

    Which type of matter emits electromagnetic radiation with a continuous distribution of several wavelengths?

    <p>Condensed matter (solids and liquids)</p> Signup and view all the answers

    What was proposed by J.J. Thomson in regards to the structure of an atom?

    <p>Positive charge is uniformly distributed and electrons are embedded in it.</p> Signup and view all the answers

    Who was responsible for proposing the classic experiment involving the scattering of alpha particles to investigate atomic structure?

    <p>Ernst Rutherford</p> Signup and view all the answers

    In Rutherford's nuclear model of the atom, where is most of the mass and positive charge of the atom concentrated?

    <p>Within a small volume called the nucleus</p> Signup and view all the answers

    What did Rutherford's model of the atom fail to explain?

    <p>Why atoms emit light of discrete wavelengths</p> Signup and view all the answers

    What is the name of the student who, along with Ernest Marsden, performed the experiment involving scattering alpha particles from metal foils?

    <p>Hans Geiger</p> Signup and view all the answers

    Which model proposed that electrons revolve around the nucleus in a manner similar to planets orbiting the sun?

    <p>Rutherford's planetary model</p> Signup and view all the answers

    What aspect of the atom was not explainable by Rutherford's model due to the emission of specific wavelengths of light?

    <p>Line spectra</p> Signup and view all the answers

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