(a)[2]
State the meaning of an $\alpha$-particle, a $\beta$-particle and $\gamma$-radiation.
(b(i))[1]
Describe how the proton number and nucleon number of a nucleus are altered when an $\alpha$-particle is emitted.
(b(ii))[1]
Describe how the proton number and nucleon number of a nucleus are altered when a $\beta$-particle is emitted.
(b(iii))[1]
Describe how the proton number and nucleon number of a nucleus are altered when $\gamma$-radiation is emitted.