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GK QUESTION#3164

Which of the following statements is NOT correct regarding Rutherford's nuclear model of an atom?

  1. AThe size of the nucleus is very large as compared to the size of the atom.Correct answer
  2. BThe electrons revolve around the nucleus in circular paths.
  3. CThere is a positively charged centre in an atom called the nucleus.
  4. DNearly all the mass of an atom resides in the nucleus.
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Answer

A. The size of the nucleus is very large as compared to the size of the atom.

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Explanation

Rutherford’s model places nearly all atomic mass and the positive charge in a nucleus much smaller than the atom. Therefore the statement that the nucleus is very large compared with the atom is incorrect. The orbiting-electron picture was part of the historical model.

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