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 Form 4 Chemistry: Radioactivity Questions and Answers

Complete the nuclear equation below: (a)#overset 131 53l rightarrow overset 131 54X_e + #-----
(b) The half-life of #overset 131 53l# is 8 days. Determine the mass of #overset 131 53l# remaining if 50 grammes decayed for 40 days.
(c ) Give one harmful effect of radioisotopes.

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