NB has various meanings in the Cosmos category. Discover the full forms, definitions, and usage contexts of NB in Cosmos.
(Chemical symbol Nb) Element No. 41 of the periodic system. Columbium OR Symbol:"Nb" Atomic Number:"41" Atomic Mass: 92.91amu. Niobium is one of the transition elements. This ductile metal (when pure) is found in many minerals. It actually turns blue when in the air and is used in spacecraft and superconducting magnets.
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