Question

Assertion :The atomic radii of the elements of oxygen family are smaller than the atomic radii of corresponding elements of the nitrogen family. Reason: The members of oxygen family are more electronegative and thus have lower value of nuclear charge than those of the nitrogen family.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

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

Atomic radii of the elements of oxygen family are smaller than nitrogen family because along the group increase in electronegative nature of element overweighs the increase in atomic number thereby decreasing the size of element as we go left to right.