Editing Technetium (section)

=== Early misidentifications ===
Many early researchers, both before and after the periodic table was published, were eager to be the first to discover and name the missing element. Its location in the table suggested that it should be easier to find than other undiscovered elements. This turned out not to be the case, due to technetium's radioactivity.

{| class="wikitable"
! Year
! Claimant
! Suggested name
! Actual material
|-
|1828
|[[Gottfried Osann]]
|[[Polinium]]
|[[Iridium]]
|-
|1845
|[[Heinrich Rose]]
|[[Pelopium]]<ref name="history-origin">{{cite news| title = History of the Origin of the Chemical Elements and Their Discoverers|url = http://www.nndc.bnl.gov/content/elements.html|access-date = 2009-05-05| first = N. E.|last = Holden| publisher = Brookhaven National Laboratory}}</ref>
|Niobium–tantalum alloy

|-
|1847
|R. Hermann
|[[Ilmenium]]<ref>{{cite journal|doi = 10.1002/prac.184704001110|title = Untersuchungen über das Ilmenium|year = 1847|last = Hermann |first=R.|journal = Journal für Praktische Chemie|volume = 40|pages = 457–480|url = https://zenodo.org/record/1427800}}</ref>
|[[Niobium]]–[[tantalum]] [[alloy]]
|-
|1877
|Serge Kern
|[[Davyum]]
|[[Iridium]]–[[rhodium]]–[[iron]] alloy
|-
|1896
|Prosper Barrière
|[[Lucium]]
|[[Yttrium]]
|-
|1908
|[[Masataka Ogawa]]
|[[Nipponium]]
|[[Rhenium]], which was the unknown [[Mendeleev's predicted elements|dvi]]-manganese<ref>{{cite journal|title=Discovery of a new element 'nipponium': re-evaluation of pioneering works of Masataka Ogawa and his son Eijiro Ogawa|journal=Spectrochimica Acta Part B|date=2004|first=H. K.| last=Yoshihara |volume=59 |issue=8 |pages=1305–1310 |doi=10.1016/j.sab.2003.12.027 |bibcode=2004AcSpB..59.1305Y}}</ref><ref name=nipponium2022>{{cite journal |last1=Hisamatsu |first1=Yoji |last2=Egashira |first2=Kazuhiro |first3=Yoshiteru |last3=Maeno |date=2022 |title=Ogawa's nipponium and its re-assignment to rhenium |journal=Foundations of Chemistry |volume=24 |issue= |pages=15–57 |doi=10.1007/s10698-021-09410-x |doi-access=free }}</ref>
|}