Here's why:

* Noble gases are a group of elements in the periodic table that are extremely unreactive. This is because they have a full outer shell of electrons, making them very stable.

* Nitrogen (N) and oxygen (O) are both highly reactive elements. They readily form bonds with other elements, and are essential for life as we know it.

Here's a breakdown:

* Noble gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

* Nitrogen is found in the atmosphere as a diatomic molecule (N2).

* Oxygen is also found in the atmosphere as a diatomic molecule (O2).

Let me know if you have any other questions!