Fluorine

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.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

Fluorine is a chemical element; it has the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as pale yellow diatomic gas. Fluorine is extremely reactive as it reacts with all other elements except for the light noble gases. Fluorine in its elemental form is highly toxic.

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

Image: .mw-parser-output .plainlist ul{line-height:inherit;list-style:none none;margin:0}.mw-parser-output .plainlist ul li{margin-bottom:0} Liquid_fluorine.jpg: Prof B. G. Mueller derivative work: TCO (talk), CC BY-SA 3.0, via Wikimedia Commons.