Nitrogen is not inherently radioactive. Radioactive isotopes of nitrogen exist, but we need to specify which one we are talking about.

Here are some common radioactive isotopes of nitrogen and their properties:

* Nitrogen-13 (¹³N):

* Atomic number: 7 (all nitrogen isotopes have this)

* Mass number: 13

* Half-life: 9.965 minutes

* Nitrogen-16 (¹⁶N):

* Atomic number: 7

* Mass number: 16

* Half-life: 7.13 seconds

So, to give you a definitive answer, you need to specify which radioactive nitrogen isotope you're interested in.