Tungstic acid

Rarity: Uncommon

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Notion

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Science and technology

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What Wikipedia says

Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. Both a monohydrate (WO3·H2O) and hemihydrate (WO3·1/2 H2O) are known. Molecular species akin to sulfuric acid, i.e. (HO)2WO2 are not observed.

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

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