Radioactive cobalt-60 decays into nickel-60 by emitting a β−\beta^-β−-particle. The equation below represents the decay.
U60Co→2860Ni+V0β {}^{60}_{U}\text{Co} \rightarrow {}^{60}_{28}\text{Ni} + {}^{0}_{V}\beta U60Co→2860Ni+V0βWhat are the values of U U\,U and VVV?
U=27U = 27U=27, V=1V = 1V=1
U=27U = 27U=27, V=−1V = -1V=−1
U=29U = 29U=29, V=1V = 1V=1
U=29U = 29U=29, V=−1V = -1V=−1
120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.