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Noble gases are a category

and exist as a Group (VII or 0) in the Periodic Table. They are helium (He) to radon (Ra)

To add to the above, there are six nobel gases - Helium, Neon, Argon, Krypton, Xenon, Radon - He, Ne, Ar, Kr, Xe, Rn. All have a complete outer energy shell and are considered to be essentially inert, which means they do not react readily with other elements.

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