Q.

Given below are two statements:

Statement I: The radii of isoelectronic species increases in the order.  ${\mathrm{Mg}}^{2+}<{\mathrm{Na}}^{+}<{\mathrm{F}}^{-}<{\mathrm{O}}^{2-}$

Statement II: The magnitude of electron gain enthalpy of halogen decreases in the order. $\mathrm{Cl}>\mathrm{F}>\mathrm{Br}>\mathrm{I}$

In the light of the above statements, choose the most appropriate answer from the options given below:        [2025]

1

Both Statement I and Statement II are incorrect

 

2

Statement I is correct but Statement II is incorrect

 

3

Statement I is incorrect but Statement II is correct

 

4

Both Statement I and Statement II are correct