Q. In a radioactive decay process, the negatively charged emitted β -particles are
A) the electrons produced as a result of the decay of neutrons inside the nucleus
B) the electrons produced as a result of collisions between atoms
C) the electrons orbiting around the nucleus
D) the electrons present inside the nucleus
Explanation
[Solution from source] In β⁻ decay a neutron inside the nucleus changes into a proton, emitting an electron (and an antineutrino). Electrons do not exist inside the nucleus beforehand, and orbital electrons are not involved. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.