(a(i))[1]
State, in nuclide notation, the symbol for an iron nucleus (atomic symbol Fe) with nucleon number 56 and proton number 26.
(a(ii))[2]
State, using nuclide notation, the symbol for a platinum nucleus (atomic symbol Pt) that contains 78 protons and 118 neutrons.
(b(i))[3]
Write down the nuclear equation that shows this radioactive decay.
(b(ii))[3]
Predict how many plutonium-238 atoms in the sample decay over 270 years.