Physics (AS & A Level) · Oct / Nov 2022 · Paper 13 · Question 39

A nucleus X undergoes β+ decay. The products are a nucleus Y with proton number Z, a β+ particle and another particle P. X → ZY + β+ + P What is particle P and what is the proton number of nucleus X?

1. Aantineutrino, Z – 1
2. Bantineutrino, Z + 1
3. Cneutrino, Z – 1
4. Dneutrino, Z + 1

As printed in the paper