Question

Ar,Kr,He are chemically inert

Answer 1

Answer:

Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.

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Answer 2

Explanation:

Ar ( argon), Kr (Krypton), He (Helium) are chemically inert because their valence shell is completely filled with eight electrons. They are stable in nature and do not react with other elements.

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