Process in which maximum energy is released :
Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy ) is (a) F > Cl > Br > I (b) F < Cl < Br < I (c) F < Cl > Br > I (d) F < Cl < Br < I
Complete:
(a)Na−...........→Na+(b)N +...........→N3−(c)Cl+e−→...........(d)Mg −...........→Mg2+(e)M+HCl→MCl2+...........(f)Mg+H2SO4→...........+...........
Arrange F, Cl, O, and N in the decreasing order of electronegativity.