Ionization enthalpy and electron gain enthalpy trendsEasy

Trends in Atomic Radii and Electron Enthalpy

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 :

SELECT ONE OPTION