Davyum

Davyum was the proposed name for a chemical element found by chemist Serge Kern in 1877.{{cite journal | doi = 10.1080/14786447708639315 | title = On a new metal, davyum| first = Serge | last = Kern | journal = Philosophical Magazine |series=Series 5 | volume = 4 | year = 1877 | pages = 158–159 | issue = 23 | url = https://zenodo.org/record/1431129 }}{{cite journal | doi = 10.1080/14786447708639360 | title = On a new metal, davyum| first = Serge | last = Kern | journal = Philosophical Magazine |series=Series 5 | volume = 4 | year = 1877 | pages = 395–396 | issue = 26 | url = https://zenodo.org/record/1431137}}{{cite journal | url = https://archive.org/stream/nature15unkngoog/nature15unkngoog_djvu.txt | doi = 10.1038/017245a0 | title = Davyum1 | year = 1878 | journal = Nature | volume = 17 | pages = 245–246 | issue=430|bibcode = 1878Natur..17..245. | doi-access = free }} It was shown that the material was a mixture of iridium and rhodium.{{cite journal | doi =10.1002/ange.19270400905 | title =Dwimangan in Platinerzen | year =1927 | last1 =Swjaginzew | first1 =O. | last2 =Korsunski | last3 =Seljakow| first2 =M. | first3 =N. | journal =Zeitschrift für Angewandte Chemie | volume =40 | pages =256 | issue =9 | bibcode =1927AngCh..40..256S }} In 1950 it was proposed that the new metal might also have contained rhenium, which had not been discovered in Kern's time.{{cite journal | doi = 10.1038/165819a0 | title = Davyum, a Possible Precursor of Rhenium (Element 75) | year = 1950 | last1 = Friend | first1 = J. Newton | last2 = Druce | first2 = J. G. F. | journal = Nature | volume = 165 | pages = 819 | issue=4203| pmid = 15423460 |bibcode = 1950Natur.165..819F | s2cid = 1276756 | doi-access = free }}