niobium (Nb) /nī·ō″bē·əm/ [Gk, Niobe, mythic daughter of Tantalus and Amphion] , a silver-gray metallic element. Its atomic number is 41; its atomic mass is 92.906. Formerly called columbium.
niobium (Nb)
niobium (Nb) /nī·ō″bē·əm/ [Gk, Niobe, mythic daughter of Tantalus and Amphion] , a silver-gray metallic element. Its atomic number is 41; its atomic mass is 92.906. Formerly called columbium.