Why do Helium, Neon and Argon have a zero valency?
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Neon and argon have completely filled electrons in their outermost shell with eight electrons and cannot lose, gain or share electrons with atoms of other elements. Therefore, the valency of these gases is zero.
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Neon and argon have completely filled electrons in their outermost shell with eight electrons and cannot lose, gain or share electrons with atoms of other elements. Therefore, the valency of these gases is zero
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