Two helium-3 nuclei fuse together to form a helium-4 nucleus and two of particle XXX. The equation for this process is:
23He+23He→24He+2X ^{3}_{2}\text{He} + ^{3}_{2}\text{He} \rightarrow ^{4}_{2}\text{He} + 2\text{X} 23He+23He→24He+2XWhat is XXX?
electron
neutron
positron
proton
50 exam-style questions on AQA A Level Physics Particles, covering Constituents of the atom, Stable and unstable nuclei, Particles, antiparticles and photons, Particle interactions, Classification of particles, Quarks and antiquarks, and Applications of conservation laws. Each one has a worked solution and a mark scheme showing where the marks go.