Energy is absorbed in all the following processes except

(1) ….IP….Endothermic(2)….∆Heg of Be,Mg,N,Nobles gases is positive due to stable configuration;(3)…. Og→O-g, ∆H=-141 kJ/mole;(4)…..I(g)→I-(g), ∆H= -296 kJ/mole ….reverse reaction is endothermic ;