Question

multiple - choice question
noble gases are...
metals.
unreactive.
radioactive.
very reactive.
rewatch

Explanation:

Noble gases have a full valence electron shell, which makes them stable and less likely to react with other elements. They are not metals (they are non - metals), and while some can be radioactive (like radon), the general property associated with noble gases is their lack of reactivity.

Answer:

unreactive.