Barium oxide

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

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Notion

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Science and technology

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What Wikipedia says

Barium oxide, also known as baria, is a white hygroscopic non-flammable compound with the formula BaO. It has a cubic structure and is used in cathode-ray tubes, crown glass, and catalysts. It is harmful to human skin and if swallowed in large quantity causes irritation.

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

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