tantalum
Noun
Meaning
A rare nonmetallic element found in certain minerals, as tantalite, samarskite, and fergusonite, and isolated as a dark powder which becomes steel-gray by burnishing. Symbol Ta. Atomic weight 182.0. Formerly called also tantalium.
Source: Webster's dictionarySynonyms
Antonyms
Hypernyms
Related terms
Phrases with the word
Examples
In 1864 and 1865, a series of scientific findings clarified that niobium and columbium were the same element (as distinguished from tantalum), and for a century both names were used interchangeably.
It contains besides niobium, tantalum and titanium up to 30% rare earth elements and is the largest source for these elements in Russia.
Because it is positioned right below tantalum, it may also be called eka-tantalum.
Chemistry experiments have confirmed that dubnium behaves as the heavier homologue to tantalum in group 5. The chemical properties of dubnium are characterized only partly.
Grinding tantalum is difficult, especially so for annealed tantalum.
He decided to keep the name tantalum. citation After Friedrich Wöhler confirmed these results, it was thought that columbium and tantalum were the same element.