NEET Physics Nuclei Questions Solved


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

(a) the electrons present inside the nucleus

(b) the electrons produced as a result of the decay of neutrons inside the nucleus 

(c) the electrons produced as a result of collisions between atoms

(d) the electrons orbiting around the nucleus

(b) Beta decay involves the emission of either electrons or positrons. The electrons or positrons emitted in a β-decay do not exist inside the nucleus. They are only created at the time of emission, just as photons are created when an atom makes a transition from higher to a lower energy state.

In negative β-decay a neutron in the nucleus is transformed into a proton, an electron and an antineutrino. Hence, in radioactive decay process, the negatively charged emitted β-particles are the electrons produced as a result of the decay of neutrons present inside the necleus.

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