Isotopes are really important when we talk about how stable elements are. Let’s break it down simply:

1. What Are Isotopes?
   Isotopes are different versions of the same element. They have the same number of protons but different numbers of neutrons. This means they have different weights.

2. Stability of Isotopes:

   • Some isotopes are stable, which means they don't change. For example, carbon-12 is stable.
   • Other isotopes can be radioactive, like carbon-14. This means they can change over time into other elements or isotopes. When they do this, they can give off energy and tiny particles.

3. Neutrons and Protons:

   • Whether an isotope is stable or not often depends on the number of neutrons compared to protons. For lighter elements, a good balance is about 1 neutron for every 1 proton.

So, when we learn about isotopes, it helps us understand why some elements are more stable than others!