Germanium monoselenide

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Science and technology

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What Wikipedia says

Germanium monoselenide is a chemical compound with the formula GeSe. It exists as black crystalline powder having orthorhombic (distorted NaCl-type) crystal symmetry; at temperatures ~650 °C, it transforms into the cubic NaCl structure.

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

Image: Andif1, CC BY-SA 4.0, via Wikimedia Commons.