atomic number 41


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Noun1.atomic number 41 - a soft grey ductile metallic element used in alloysatomic number 41 - a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
columbium - a former name for niobium
columbite, niobite - a black mineral that is an ore of niobium and tantalum