Answer:

Explanation:

The element with 18 electrons has a fully filled outermost shell and in its octet hence will have lesser tendency to either lose or gain electrons than the element with 17 electrons which needs one electron to complete its octet. Hence, 34X17 is more reactive than 40X18.23-Jul-2020

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The element with 18 electrons has a fully filled outermost shell and in its octet hence will have lesser tendency to either lose or gain electrons than the element with 17 electrons..Thus, we can conclude the element which requires only one electron to fill its octet will be more reactive and Chemically Inert..

Therefore,,

17X³⁴ is Chemically Inert...

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