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Chemistry Hard FPSC Uploaded: 04 Sep 2026

Which particle is emitted during beta decay?

  • A Alpha particle
  • B Electron
  • C Neutron
  • D Proton
Correct Answer: Option B — Electron
Explanation:
Beta decay involves the emission of a high-energy electron (beta particle) from the nucleus, occurring when a neutron converts into a proton, increasing the atomic number by one while mass number stays the same.
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Submitted by: PaperMCQs
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