A sodium-22 nucleus decays into a nucleus of neon-22, a beta-plus particle and particle Y\text{Y}Y.
1122Na→1022Ne++10e+Y ^{22}_{11}\text{Na} \rightarrow {^{22}_{10}}\text{Ne} + {^{0}_{+1}\text{e}} + \text{Y} 1122Na→1022Ne++10e+YWhich is a property of particle Y\text{Y}Y?
It is an antiparticle
It has a lepton number of +1+1+1
It is positively charged
It experiences the strong interaction
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.