In 1937 Carlo Perrier & Emilio Segre filled in no. 43 on this table, the first entry to be artificially produced
[DOC] [TLE] Emilio Segr - National Academy of Sciences [PAR] ration with the Palermo chemist Carlo Perrier he discov- ered the element 
technetium (atomic number Z = 43), not known in nature because all of its 
isotopes are... [DOC] [TLE] Emilio Gino Segr | Biographical Memoirs V.81 | The National ... [PAR] EMILIO GINO SEGR made important contributions to atomic and nuclear ... 
Carlo Perrier he discovered the element technetium (atomic number Z = 43), not 
...