Given below are two statements:
Statement I: The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of $M g$.
Statement II: The ionic radius of $\mathrm{O}^{2-}$ is larger than that of $\mathrm{F}^{-}$.
In the light of the above statements, choose the correct answer from the options given below
Select the correct option:
A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is false but Statement II is true
D
Statement I is true but Statement II is false
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\mathbf{N a}^{+}:-1 s^2 2 s^2 2 p^6$ (fully filled electronic configuration)
$\mathrm{Mg}^{+}:-1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^1$
$\mathrm{IE}_2$ of $\mathrm{Na}>\mathrm{IE}_2$ of Mg
Size of $\mathrm{O}^{2-}>\mathrm{F}^{-}$
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