The nuclear equation shown below describes a plutonium (Pu) nucleus undergoing decay to produce an americium (Am) nucleus together with a $\beta$-particle.
$^{241}_{Z}\text{Pu} \rightarrow ^{241}_{95}\text{Am} + \beta$
(a(i))[1]
State which physical quantity is shown by the letter $Z$ in this equation.
(a(ii))[1]
State the number represented by $Z$.
(b)[2]
Complete the nuclear equation for this radioactive decay.
$^{241}_{95}\text{Am} \rightarrow$
(c)[3]
Calculate how long this decay takes.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Atomic number or number of protons” …