(a(i))[1]
State which type of radioactive emission makes the proton number of a nuclide rise by 1.
(a(ii))[1]
State the type of radioactive emission that leaves both the proton number and the nucleon number of a nuclide unchanged.
(a(iii))[1]
State the type of radioactive emission that produces no change in proton number and no change in nucleon number for a nuclide.
(b(i))[1]
On Fig. 11.1, draw the route followed by the $\alpha$-particle beam in the electric field.
(b(ii))[3]
Estimate how many $\alpha$-particles will be emitted by the radon-220 in the sample over the next 168 s.