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 $\mathrm{O}^{2-}$ and $\mathrm{Mg}^{2+}$ are same.
Reason ( R ) : Both $\mathrm{O}^{2-}$ and $\mathrm{Mg}^{2+}$ are isoelectronic species
In the light of the above statements, choose the correct answer from the options given below
Select the correct option:
A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true but (R) is not the correct explanation of (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Ionic radius of O²⁻ is more than that of Mg²⁺ Both O²⁻ and Mg²⁺ are isoelectronic with 10 electrons
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