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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
Rutherford's alpha$-$particle scattering experiment showed for the first time that an atom has:
  • A
    Electrons
  • B
    Protons
  • ✓
    A nucleus
  • D
    Neutrons
✓

Answer

Correct option: C.
A nucleus
Since most of the alpha particles in Rutherford's experiment passed through the atom undeflected, he concluded that most of the space inside an atom is empty.
He also postulated that most of the mass of the atom is limited to a small volume inside the atom, called nucleus.

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