Emission of β-particles during radioactive decay of a substance is from__________________?
Correct answer: B. Nucleus
- A. Innermost shell
- B. Nucleus
- C. Outermost shell
- D. None of these
Explanation
Beta particles are high-energy electrons or positrons released from the nucleus when a neutron changes into a proton or vice versa. They do not originate from an atomic shell, as ordinary orbital electrons do.
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