Elements that have 0 as valency
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Hii, here is your answer..
Explanation:
Elements which have 0 valency are known as noble or inert gases.
They are- Neon, Argon, Krypton, Xenon and Radon.
Helium has valency 2 but due to exception it is kept in 0 group.
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argon,neon,kryptonite,xenon,helium and radon
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