Question

When an atom undergoes ${\beta }^{+}$ decay

• A. a neutron changes into a proton
• B. a proton changes into a neutron
• C. a neutron changes into an antiproton
• D. a proton changes into an antineutron

Answer 1

Answer: (B)

a proton changes into a neutron

In ${\beta }^{+}$ decay, there is loss of one proton and an neutrino is emitted from nucleus.