a nobel gas which is absent in nature
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The six noble gas which do no occur naturally are
Helium (He)
Neon (Ne)
Argon (Ar)
Krypton (Kr)
Xenom (xe)
And the radioactive Radon (Rn).
Helium (He)
Neon (Ne)
Argon (Ar)
Krypton (Kr)
Xenom (xe)
And the radioactive Radon (Rn).
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Answer:
Xenon✔
Explanation:
Xenon has almost vanished from Earth's atmosphere.
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