Match List-I with List-II

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The ionic radii of O^2$$-$$ and Mg²⁺ are same.

Reason (R) : Both O^2$$-$$ and Mg²⁺ are isoelectronic species.

In the light of the above statements, choose the correct answer from the options given below.

Match List-I with List-II

Choose the correct answer from the options given below :

Addition of H₂SO₄ to BaO₂ produces :