Question

why argon and neon have zero valency​

Answer 1

Answer:

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Helium has two electrons in its energy shell, while argon and neon have 8 electrons in their valence shells. As these have maximum number of electrons in their valence shells, they do not have any tendency to combine with other elements. Hence, they have a valency equal to zero.

Answer 2

Answer:

As they are noble gases. They have their octet completed. i.e. Their outermost shell is completely filled and they are stable that is why argon and neon have zero valency.

hope this helps

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