Niobium

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Notion

Domain

Science and technology

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What Wikipedia says

Niobium is a chemical element; it has symbol Nb (formerly columbium, Cb) and atomic number 41. It is a light grey, crystalline transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium, and it has similar ductility to iron.

Excerpt from the Wikipedia article “Niobium”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Alchemist-hp (talk) (www.pse-mendelejew.de), FAL, via Wikimedia Commons.