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Q.

Who discovered the nucleus of an atom?

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a

Neils Bohr

b

J.J. Thomson

c

Rutherford

d

J. Chadwick

answer is B.

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Detailed Solution

  • In 1911, Ernest Rutherford discovered that at the core of every atom is a nucleus. 
  • Rutherford, Marsden and Geiger discovered the dense atomic nucleus by bombarding a thin gold sheet with the alpha particles emitted by radium.
  • Nucleus consists of electrically positive protons and electrically neutral neutrons. Electrons are present outside the nucleus.
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