How does the chemical reactivity of an unstable isotope compare with that of a stable isotope?

The difference between a stable isotope and an unstable isotope

A "stable isotope" is any of two or more forms of an element whos nuclei contains the same number of protons and electrons, but a different number of neutrons. Stable isotopes remain unchanged indefinitely, but "unstable" (radioactive) isotopes undergo spontaneous disintegration.

Explanation:

hope it helps!

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.