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Vaselesa [24]
3 years ago
7

What is the radioactive nucleus before it decays​

Chemistry
1 answer:
Darina [25.2K]3 years ago
7 0

Answer:

Alpha decay is one type of radioactive decay, in which an atomic nucleus emits an alpha particle, and thereby transforms (or "decays") into an atom with a mass number decreased by 4 and atomic number decreased by 2.

Explanation:

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