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In a radioactive decay process, the negatively charged emitted β-particles are

1. the electrons produced as a result of the decay of neutrons inside the nucleus
2. the electrons produced as a result of collisions between atoms
3. the electrons orbiting around the nucleus
4. the electrons present inside the nucleus

Correct answer: the electrons produced as a result of the decay of neutrons inside the nucleus

Solution

In β-decay, a neutron inside the nucleus decays into a proton, an electron (β-particle), and an antineutrino. The emitted β-particles are these electrons.

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