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[Niobium (Nb)]
 
   Niobium is a silvery, soft, ductile metallic element that occurs chiefly in columbite-tantalite. Niobium is shiny, white, soft and ductile, and takes on a bluish sheen when exposed to air for a long time.
index: [Niobium (Nb)]
 
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  Investigating the Status of Niobium in Iran & World
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Atomic Number: 41
Density:
8/57gr/cm3
Hardness: 6
Color: white-gray
Streak: -
Luster: -
Period:
5
Table Group:
5
Series:
Transition m.
 
 
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