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OpenStudy (anonymous):
***MEDAL*** An amateur scientist tells you he has a stable atom of 84 Po 212, why is that unlikely? A. No atoms are stable. B. Amateur scientists don't know anything. C. There are no stable nuclei with more than 83 protons. D. Male scientists can't be trusted. Definitely not B or D!
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OpenStudy (cuanchi):
I will go for C Belt of stability elements beyond the atomic number of 83 are unstable radioactive elements. http://chemwiki.ucdavis.edu/Physical_Chemistry/Nuclear_Chemistry/Nuclear_Stability_and_Magic_Numbers
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