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Homework Help: Chemistry, Physics (Radiation Toxicology)

Posted by Naresh on Tuesday, September 27, 2011 at 3:43am.

a) Na-22 decays in two ways. In 100 atoms of Na-22 decaying, how many would decay by positron emission and how many would decay by electron capture? Why is the yield of photon gamma (+/-) so high?

b) In 100 decays of Ra-226, how many decays would result in emission of one photon, and how many decays would result in no photon emissions?

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