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A level: Radioactivity Questions

Q10.

(a) Sketch, using the axes provided, a graph of neutron number, N, against proton number, Z, for stable nuclei over the range Z = 0 to Z = 80. Show suitable numerical values on the N axis.

(2 marks)

(b) On the graph indicate, for each of the following, a possible position of a nuclide that may decay by

(i) emission, labelling the position with W,

(ii) emission, labelling the position with X,

(iii) emission, labelling the position with Y.

(3 marks)

(c) The isotope decays sequentially by emitting particles and particles, eventually forming the isotope . Four particles are emitted in the sequence. Calculate the number of particles in the sequence.

(2 marks)

(d) A particular nuclide is described as proton-rich. Discuss two ways in which the nuclide may decay.

(3 marks)

(Total 10 marks)