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Around 1500 unstable nuclei (or radioisotopes).
Penis
radioactive
Bukkake
AFRICA
Break apart
Atomic nuclei that are unstable and decaying are said to be radioactive. Radioactive decay involves alpha, beta and gamma particle emissions.
The spontaneous decomposition of unstable atomic nuclei.
Radioactive decay
natural radioactivity
We all know and love it as radiation.
spontaneous decay of unstable atomic nuclei.