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Chemistry · Structure of atom

हिन्दी

Which sub-atomic particle was discovered by bombarding a thin sheet of beryllium by \( \alpha \)-particles and producing electrically neutral particles?

  1. Electron
  2. Proton
  3. Positron
  4. Neutron

Correct answer · Option 4

Neutron

Explanation

Chadwick discovered neutrons in 1932 by bombarding beryllium with \( \alpha \)-particles.
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