(a)[3]
Draw a diagram showing how many electrons, neutrons and protons are present in a neutral carbon-14 atom, and how these particles are arranged.
(b)[2]
Describe how a neutral atom of carbon-14 differs in composition from a neutral atom of nitrogen-14 ($^{14}_{7}\text{N}$).
(c(i))[1]
State the name of a particle that is the same as a beta-particle.
(c(ii))[1]
Describe the change that occurs in carbon-14 when a beta-particle is emitted.
(d)[3]
Work out how much time has elapsed since it was manufactured.