128 Te undergoes an extremely rare form of radioactive decay know as double beta decay: This is...

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128Te undergoes an extremely rare form of radioactive decay know as double beta decay:

128 Te 138Xe + 2 _B + 2 +


This is an extremely low probability event; its half-life of 2.2 × 1024 years is among the longest half-lives that have been determined. Estimate the activity in a 128-g (1 mol) sample of 128Te. How many 128Te atoms in such a 1-mol sample would decay in a day?

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Chemistry For Engineering Students

ISBN: 9780357026991

4th Edition

Authors: Lawrence S. Brown, Tom Holme

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