MCQ
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 $Mg ^{2+}$ are same.
Reason $( R )$ : Both $O ^{2-}$ and $Mg ^{2+}$ are isoelectronic species.
In the light of the above statements, choose the correct answer from the options given below
- ABoth $(A)$ and $(R)$ are true and $(R)$ is the correct explanation of $( A )$
- BBoth $(A)$ and $(R)$ are true but $(R)$ is not the correct explanation of $(A)$
- C$(A)$ is true but $(R)$ is false
- ✓$(A)$ is false but $(R)$ is true