metallic element,
metal any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
fergusonite a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals
columbite,
niobite a black mineral that is an ore of niobium and tantalum
= synonym
= antonym
= relatert ord
Wiktionary
Substantiv
tantalum -
A metallic chemical element symbol Ta with an atomic number of 73.
Wikipedia
Tantalum is a chemical element with the symbol Ta and atomic number 73. A rare, hard, blue-gray, lustrous transition metal, tantalum is highly corrosion resistant and occurs naturally in the mineral tantalite, always together with the chemically similar niobium. It is part of the refractory metals group, which are widely used as minor component in alloys.
OmegaWiki Dictionary
Ω
tantalum Chemical element with symbol Ta and atomic number 73, grey blue transition metal.
