Multiple choice general knowledge science & technology

Element with atomic number 41 has 2 names, what are they?

  1. Niobium, Columbium

  2. Lutetium, Luthenium

  3. Neodymium, Prasedeomium

  4. Zinc, Zirconium
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Explanation

Element 41 is officially named Niobium (Nb), but was originally called Columbium (Cb) when first discovered in the USA. The name Columbium was used in American literature for decades before IUPAC standardized on Niobium. The dual naming reflects this historical dispute.

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