iron(II)

Also known as ferrous ion, ferrous, iron(II) ion, iron(2+), iron(2+) ion, ferrous cation, iron ion(2+), Fe2+

thumb|Iron(II) chloride tetrahydrate, .

Chemical data

Formula: Fe+2
Molecular weight: 55.84 g/mol
IUPAC name: iron(2+)
SMILES: [Fe+2]
InChIKey: CWYNVVGOOAEACU-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 2

via PubChem

Wikidata facts

Has part: iron
Followed by: iron(III)
Mass: 55.93384034018

Show 4 more facts

chemical formula: Fe²⁺
canonical SMILES: [Fe+2]
found in taxon: Homo sapiens
subject has role: primary metabolite

Sources (4)

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Encyclopedic overview

7 sections

Contents

Ferrous ions in biology
Ferrous salts and complexes
Ferrous minerals and other solids
Bonding
Gallery
See also
References

thumb|Iron(II) chloride tetrahydrate, .

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 (). The adjective ferric is used instead for iron(III) salts, containing the cation Fe3+. The word ferrous is derived from the Latin word , meaning "iron".

Excerpted from Wikipedia’s “iron(II)” article, available under the CC BY-SA 4.0 licence.