Which reaction will most likely take place based on the activity series? Li > K > Ba > Ca > Na > Mn > Zn > Cr > Fe > Cd > Ni > H > Sb > Cu > Ag > Pd > Hg > Pt Pt FeCl3 Right arrow. Mn CaO Right arrow. Li ZnCO3 Right arrow. Cu 2KNO3 Right arrow.