UCE PHYSICS 2009 PAPER 1 QTN 43

. (a) what is meant by the term radioactivity?

(b)

The above equation shows three stages (i), (ii) and (iii) of radioactive series.

(i) Name the particles emitted at stage (ii) and stage (iii) of the series.

(ii) Which of the nuclei A, B, C and D are isotopes?

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