What would you call an atom that is unlikely to react or create bonds due to having a full valence shell?

Noble gases are odorless, colorless, nonflammable, and monotonic gases that have low chemical reactivity. The full valence electron shells of these atoms make noble gases extremely stable and unlikely to form chemical bonds because they have little tendency to gain or lose electrons.

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im not exactly sure but i think its b!

the answer is c

tell me if wrong