A $\beta ^ { - }$decay occurs in an unstable nucleus when
A) a neutron is converted to an alpha particle by the weak force.
B) a proton is converted to a neutron by the strong force.
C) a proton is converted to an electron by the strong force.
D) a neutron is converted to a positron by the weak force.
E) a neutron is converted to a proton by the weak force.

Question

Quizplus · Accepted Answer

In $\beta^-$ decay, a neutron in an unstable nucleus is converted into a proton, an electron (also known as a beta particle in this context), and an antineutrino. This process is mediated by the weak nuclear force, making option E the correct answer.

A β−\beta ^ { - }β− Decay Occurs in an Unstable Nucleus When A) a Neutron

A $\beta ^ { - }$ Decay Occurs in an Unstable Nucleus When
A) a Neutron