Chemistry, asked by frao60551, 1 year ago

Which elements are consideresd radioactive and why?

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Answered by Anonymous
0
ElementMost Stable IsotopeHalf-life of Most Stable IstopePoloniumPo-209102 yearsAstatineAt-2108.1 hoursRadonRn-2223.82 daysFranciumFr-22322 minutes
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