Physics 9702 · AS & A Level · Mass defect and nuclear binding energy
Mass defect and nuclear binding energy — practice question
A possible nuclear reaction occurring in a nuclear reactor is represented by the equation $^{235}_{92}\text{U} + ^{1}_{0}\text{n} \rightarrow ^{95}_{42}\text{Mo} + ^{139}_{57}\text{La} + 2^{1}_{0}\text{n} + x\,^{0}_{-1}\text{e}$. The nuclei and particle data are shown in Fig. 12.1.
(a)[1]
Determine the value of $x$ for this nuclear reaction.
(b(i))[3]
Show that the energy equivalent of $1.00\,\text{u}$ is $934\,\text{MeV}$.
(b(ii))[3]
Calculate the energy, in $\text{MeV}$, released in this reaction. Give your answer to three significant figures.
(c)[2]
Suggest the forms of energy into which the energy found in (b)(ii) is converted.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$x=7$” …