# How many stable isotopes does nitrogen have?

$\text{^(14)"N}$, which makes up 99.6% of a typical sample of nitrogen, and $\text{^(15)"N}$, which makes up 0.4% of a typical sample of nitrogen. A synthetic isotope, $\text{^(13)"N}$ has a half-life of $\text{9.965 min}$, and is therefore not stable.