How does the size of the main nucleus produced in a nuclear fusion reaction compare to the sizes of the two reacting nuclei?
It is smaller than both reacting nuclei.
It is larger than both reacting nuclei.
It is larger than one and smaller than the other reacting nucleus.
It is the same size as the larger reacting nucleus.
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.