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September 1, 2015

Homework Help: Chemistry

Posted by Jazmin on Monday, May 30, 2011 at 8:48pm.

which of the following 10 g samples will decay the most in 28 days?
a.P-32
b.Kr-85
c.Fr-220
I-131

the answer is c.Fr-220 but i want to know why, please help

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