# How many isotopes of gold are there?

There is only one stable isotope of gold found in nature, $\text{^"197""Au}$.
However, there are four synthetic isotopes of gold that are radioactive: They are $\text{^"195""Au}$, $\text{^"196""Au}$, $\text{^"198""Au}$, and$\text{^"199""Au}$, with half-lives anywhere from 2.7 days to 186 days.