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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
According to Rutherford's atomic theory, the path an electron takes while revolving around the nucleus will be:
  • A
    Circular
  • ✓
    Spiral
  • C
    Straight
  • D
    None of these
✓

Answer

Correct option: B.
Spiral
According to Rutherford's atomic theory, the electrons revolve around the nucleus in circular paths. But, the revolution of the electron in a circular orbit is not expected to be stable.
Any particle in a circular orbit would undergo acceleration.
During acceleration, charged particles would radiate energy.
Thus, the revolving electron would lose energy due to which the radius of revolutions will go on decreasing until it finally falls into the nucleus.
The path the electron takes will be spiral and not circular.

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