Question 14: Explain why neutron activated nuclides tend to decay by β– rather than β+.
The emission of neutron is due to the fact that the in such reactions a neutron converts to proton and emits an electron. The reaction is as follow.
0n1 ——– 1P1 + β—particle OR
0n1 ——- 1P1 + e–
This shows the formation of β– – particle when the neutron converts to proton. In such reactions the charge number of nucleus increases by one unit and no change occurs in the mass number of the nucleus.