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- Q5271649 subject Q7886201.
- Q5271649 abstract "Dianium was the proposed name for a new element found by the mineralogist and poet Wolfgang Franz von Kobell in 1860. The name derived from the Roman goddess Diana. During the analysis of the mineral tantalite and niobite he concluded that it does contain an element similar to niobium and tantalum. Following the rediscovery of niobium in 1846 by the German chemist Heinrich Rose, Friedrich Wöhler, Heinrich Rose, R. Hermann and Kobell analysed the minerals tantalite and columbite to better understand the chemistry of niobium and tantalum. The similar reactivity of niobium and tantalum hindered preparation of pure samples and therefore several new elements were proposed, which were later found to be mixtures of niobium and tantalum. Rose discovered pelopium in 1846, while Hermann announced the discovery of ilmenium in 1847. In 1860 Kobell published the results on the tantalite from a quarry near Kimito a village in Finland and columbite from Bodenmais a village in Germany. He concluded that the element he found was different from tantalum, niobium, pelopium and ilmenium.The differences between tantalum and niobium and the fact that no other similar element was present were unequivocally demonstrated in 1864 by Christian Wilhelm Blomstrand, and Henri Etienne Sainte-Claire Deville, as well as by Louis J. Troost, who determined the formulas of some of the compounds in 1865 and finally by the Swiss chemist Jean Charles Galissard de MarignacBoth tantalum and niobium react with chlorine and traces of oxygen, including atmospheric concentrations, with niobium forming two compounds: the white volatile niobium pentachloride (NbCl5) and the non-volatile niobium oxychloride (NbOCl3). The claimed new elements pelopium, ilmenium and dianium were in fact identical to niobium or mixtures of niobium and tantalum.".
- Q5271649 wikiPageWikiLink Q1046.
- Q5271649 wikiPageWikiLink Q1123.
- Q5271649 wikiPageWikiLink Q124045.
- Q5271649 wikiPageWikiLink Q132543.
- Q5271649 wikiPageWikiLink Q1851648.
- Q5271649 wikiPageWikiLink Q3262363.
- Q5271649 wikiPageWikiLink Q33.
- Q5271649 wikiPageWikiLink Q417510.
- Q5271649 wikiPageWikiLink Q425790.
- Q5271649 wikiPageWikiLink Q4332917.
- Q5271649 wikiPageWikiLink Q487347.
- Q5271649 wikiPageWikiLink Q513654.
- Q5271649 wikiPageWikiLink Q58575.
- Q5271649 wikiPageWikiLink Q6000805.
- Q5271649 wikiPageWikiLink Q637080.
- Q5271649 wikiPageWikiLink Q688.
- Q5271649 wikiPageWikiLink Q76459.
- Q5271649 wikiPageWikiLink Q77286.
- Q5271649 wikiPageWikiLink Q7886201.
- Q5271649 wikiPageWikiLink Q899841.
- Q5271649 wikiPageWikiLink Q905534.
- Q5271649 comment "Dianium was the proposed name for a new element found by the mineralogist and poet Wolfgang Franz von Kobell in 1860. The name derived from the Roman goddess Diana. During the analysis of the mineral tantalite and niobite he concluded that it does contain an element similar to niobium and tantalum. Following the rediscovery of niobium in 1846 by the German chemist Heinrich Rose, Friedrich Wöhler, Heinrich Rose, R.".
- Q5271649 label "Dianium".