Why are the elements of Group 18 known as nob | vedclass

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(B) The elements of Group $18$ have a stable electronic configuration with completely filled valence shell orbitals $(ns^2 np^6)$.Due to this stable c

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They have completely filled valence shell orbitals.

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(B) The elements of Group $18$ have a stable electronic configuration with completely filled valence shell orbitals $(ns^2 np^6)$.Due to this stable configuration,they have very low chemical reactivity and react with only a few elements under specific conditions.Hence,they are known as noble gases.

Why are the elements of Group $18$ known as noble gases?

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