ANYBODY KNOW..

does anybody knowq any websites that has qustions about half lives (radioactivity)?

Here is a fact sheet. I don't know if it is what you are looking for or not. If you have a question about radioactivity, post it here and I'm sure someone will be able to answer it.
http://web.ead.anl.gov/uranium/faq/uproperties/faq4.cfm

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