# Uranium-238 decays into thorium-234. How do scientists explain why this happens?

This is an example of radioactive decay causing transmutation.

#### Explanation:

The process of alpha decay releases an alpha particle from an unstable nucleus.

The symbol for alpha is a $\alpha$.

This video provides further explanation for the process of radioactive decay. The video discusses examples of both alpha and beta decay.

Transmutation is the coversion of one chemical element into a different element.

Hope this helps!