Copper(II) fluoride

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What Wikipedia says

Copper(II) fluoride or cupric fluoride is an inorganic compound with the chemical formula CuF2. The anhydrous form is a white, ionic, crystalline, hygroscopic salt with a distorted rutile-type crystal structure, similar to other fluorides of chemical formulae MF2 (where M is a metal).

Excerpt from the Wikipedia article “Copper(II) fluoride”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ondřej Mangl, Public domain, via Wikimedia Commons.