In radioactive decay process, the negatively changed emitted `beta-`particle are

Options

A. the electrons present inside the nucleus
B. the electrons produces as a result of the decay of neutrons inside the nucleus
C. the electrons produces as a result of collisions between atoms
D. the electrons orbiting around the nucleus

Answer

B

Explanation

(b) Beta decay can involve the emission of either electrons or positrons. The electrons or positrons emitted in a `beta-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 transition from higher to a lower energy state.
In negative `beta-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 `beta-`particles are the electrons produced as a result of the decay of neutrons present the nucleus.