Which one is the correct summary equation of nitrogen fixation ?
N2+8e–+8H++8ATP → NH3+H2+16ADP+16P
N2+8e–+8H++16ATP—> 2NH3+H2+16ADP+16P
2NH3+4O2-» 2H++2H2O+2NO3
2NH3+3O2—> 2NO2–+2H++2N2O