Ferrous

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

In chemistry, iron(II) refers to the element iron in its +2 oxidation state. The adjective ferrous or the prefix ferro- is often used to specify such compounds, as in ferrous chloride for iron(II) chloride (FeCl2). The adjective ferric is used instead for iron(III) salts, containing the cation Fe3+.

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

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