Radioactive iodine−131 (t1/2 = 8.0 days) decays to form xenon−131 by emission of a β particle. How much of each isotope is present after each time interval if 66 mg of iodine−131 was present initially: (a) 16 days; (b) 24 days? (a) mg of iodine−131, mg of xenon−131 (b) mg of iodine−131, mg of xenon−131

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.