Question

c. As stars larger than the Sun age, a nuclear process called the CNO cycle plays an important part in the generation of stable and unstable isotopes of carbon, nitrogen and oxygen. Complete and balance the following two equations that occur as part of the CNO cycle, giving the correct details for the missing reactant elements indicated by '?' in the equations below ? + H+ 4N+r (amended from He to N) ? +1H + 12 C + He where y indicates a gamma ray photon. (3 marks)