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A level: Radioactivity Questions

Q3.

(a) Nuclear fission can occur when a neutron is absorbed by a nucleus of uranium-235. An incomplete equation for a typical fission reaction is given below.

(i) State the nuclear composition of X.

(ii) Name the element of which X is an isotope. (3 marks)

(b) In a small nuclear power plant one fifth of the fission energy is converted into a useful output power of 10 MW. If the average energy released per fission is 3.2 × 10–11J, calculate the number of uranium-235 nuclei which will undergo fission per day. (3 marks)

(Total 6 marks)