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The electron emitted in beta radiation o...

The electron emitted in beta radiation originates from

A

(a) inner orbits of atom

B

(b) free electrons existing in nuclei

C

(c) decay of a neutron in a nucleus

D

(d) photon escaping from the nucleus

Text Solution

Verified by Experts

The correct Answer is:
C
During `beta`-decay, a neutron is transformed into a proton and an electron. This is why atomic number (Z=number of protons) increases by one and mass number (A=number of protons + neutrons) remains unchanged during `beta`-decay.
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