Nickel(II) oxide

Rarity: Uncommon

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Notion

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Science and technology

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What Wikipedia says

Nickel(II) oxide is the chemical compound with the formula NiO. It is the principal oxide of nickel. It is classified as a basic metal oxide. Several million kilograms are produced annually of varying quality, mainly as an intermediate in the production of nickel alloys.

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

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