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Nitella [24]
3 years ago
6

Please Help I will reward brainliest

Chemistry
2 answers:
8_murik_8 [283]3 years ago
7 0
I think it is "Known".

Radioactive decay is measured using a formula where the half-life <span>of an isotope is the time it takes for the original nuclei to decay half of its original amount.</span>
Alina [70]3 years ago
3 0
Base in what I found online it would be unpredictable . Hope that helps!
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