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grin007 [14]
3 years ago
8

All isotopes of technetium are radioactive, but they have widely varying half-lives. If an 800.0 g sample of technetium-99 decay

s to 100.0 g of technetium-99 in 639 000 y. What is it's half-life?
Biology
1 answer:
ollegr [7]3 years ago
5 0
It would mean 800.0
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