Consider the following conversionsi) O(g) + e- → O-(g) .ΔH1ii) F(g) + e- → F-(g) .ΔH2iii) Cl(g) + e- → Cl-(g) .ΔH3iv) Na(g)  → Na+(g) .ΔH4Incorrect statement is

O(g) + e- → O-(g)  is exothermicF(g) + e- → F-(g)   is exothermicCl(g) + e- → Cl-(g) is exothermicNa(g)  → Na+(g)     is endothermic.ΔH1 , ΔH2 and ΔH3 are negative where as  ΔH4 is positiveThus 3rd option is incorrect