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Umnica [9.8K]
2 years ago
6

A half-life of a radioactive substance is the amount of time needed for one half of _____ to decay into a stable isotope.

Geography
1 answer:
balu736 [363]2 years ago
8 0

Answer: The molecules

Explanation:

A half-life describes the time it takes for half of the molecules to turn into a stable isotope

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