- (formerly) niobium.Symbol: Cb
Origin of columbium
Examples from the Web for columbium
Historical Examples of columbium
Columbium was discovered in a mineral sent from Massachusetts in North America.
Chemically related to vanadium are the two elements tantalum and columbium or niobium.
Columbium is a metal closely resembling tantalum and tantalum found a use as electric light filaments.Creative Chemistry
Edwin E. Slosson
Columbium pentoxide (columbic acid), Cb2O5, is obtained from columbite, after the removal of tantalum (see above).
Columbium pentafluoride, CbF5, is obtained when the pentoxide is dissolved in hydrofluoric acid.
- the former name of niobium