In positron decay,the number of protons in the nucleus is
A)decreased by 1.
B)decreased by 2.
C)increased by 1.
D)increased by 2.
E)remains unchanged.

Question

Quizplus · Accepted Answer

In positron decay, a proton in the nucleus is converted into a neutron, which emits a positron and a neutrino. Since a proton is converted into a neutron, the number of protons in the nucleus decreases by 1. Therefore, the best choice is A, which states that the number of protons in the nucleus is decreased by 1.

In Positron Decay,the Number of Protons in the Nucleus Is