{HEAD ~ The bismuth} may be present in the cathode 23, 24 in {TAIL ~ various forms} such as Bi4 , BiO2 , Bi metal, Bi3+, and various transient Bi2+ and Bi+ species, depending on the electrode potential 
{ HEAD ~ The bismuth } may be present in the cathode 23 , 24 in { TAIL ~ various forms } such as Bi4 , BiO2 , Bi metal , Bi3 + , and various transient Bi2 + and Bi+ species , depending on the electrode potential
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH