Here’s a clear explanation without using equations:
Alpha decay is a type of radioactive decay where an unstable atomic nucleus releases an alpha particle to become more stable.
- An alpha particle is made up of 2 protons and 2 neutrons, which is the same as a helium nucleus.
- When a nucleus undergoes alpha decay, it loses 2 protons and 2 neutrons, which changes the element into a different one.
- This type of decay is common in heavy elements, like uranium or radium.
- Alpha particles are not very penetrating; they can be stopped by something as simple as paper or the outer layer of skin.
- The main purpose of alpha decay is for the unstable nucleus to reach a more stable state.