Which best explains why some radioisotopes decay in a decay series? Radioactive materials will always be radioactive. Multiple d
ecays are always required to achieve stability. Some unstable materials decay radioactively into other unstable materials. Unstable materials have varying half-lives.
<span>Which best explains why some radioisotopes decay in a decay series? </span><span> The correct answer is: Some unstable materials decay radioactively into other unstable materials.
</span>Radioactive decay a the spontaneous process through which an unstable atomic nucleus breaks into smaller, more stable fragments. <span>It's basically a matter of thermodynamics. Every atom seeks to be as stable as possible. In the case of radioactive decay, instability occurs when there is an imbalance in the number of </span>protons<span> and </span>neutrons<span> in the atomic nucleus.</span>