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iron(II) oxide
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English
Wikipedia
has an article on:
iron(II) oxide
Wikipedia
Noun
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iron(II)
oxide
(
uncountable
)
(
chemistry
)
The chemical compound FeO,
iron oxide
where iron has a valence of +2.
Usage notes
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This is the
IUPAC
preferred
nomenclature
. The old term was
ferrous oxide
.