In thermoelectric series, lead is arranged in the middle and other metals arranged both on the left and right hand side of lead. Lead does not exhibit Thomson effect. If you take a metal on the left of lead and another metal on its right, the thermo electric current flows according to certain rules. Ok. But if a thermocouple is made by taking any metal and the other metal lead itself, how lead will behave? Will lead produce seebeck effect and peltier effect? Will there be any emf in the circuit? Was there any attempt to make a thermocouple using lead as one of the metals? can any body enlighten on this line?