Assertion :Atomic size of group $18$ elements is more than the atomic size of group $17$ [ $V I I$ $A$ ] elements. Reason: Group $18$ elements has a complete octet.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Group $18$ has larger atomic size due to vanderwaal radius.

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Assertion :Atomic size of group 18 elements is more than the atomic size of group 17 [VII A] elements. Reason: Group 18 elements has a complete octet.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionGroup 18 has larger atomic size due to vanderwaal radius.

Assertion :Atomic size of group $18$ elements is more than the atomic size of group $17$ [ $V I I$ $A$ ] elements. Reason: Group $18$ elements has a complete octet.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Group $18$ has larger atomic size due to vanderwaal radius.