Periodic Table And Periodicity

Given below are two statements :

Statement (I) : The radii of isoelectronic species increases in the order.


Mg²⁺ < Na⁺ < F^$-$ < O^2-

Statement (II) : The magnitude of electron gain enthalpy of halogen decreases in the order.


Cl > F > Br > I

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