Chromium(II) oxide
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Names | |
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IUPAC name
chromium(II) oxide | |
Identifiers | |
PubChem CID |
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Properties | |
CrO | |
Molar mass | 67.996 g/mol |
Appearance | black |
Melting point | 300 °C (572 °F; 573 K) (decomposes) |
Structure | |
cubic, cF8 | |
Fm3m, No. 225 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Infobox references | |
Chromium(II) oxide (CrO) is an inorganic compound composed of chromium and oxygen.[1] It is a black powder that crystallises in the rock salt structure.[2] Hypophosphites may reduce chromium(III) oxide to chromium(II) oxide:
- H3PO2 + 2 Cr2O3 → 4 CrO + H3PO4
It is readily oxidized by the atmosphere. Chromium (II) oxide is basic, while CrO
3 is acidic, and Cr
2O
3 is amphoteric.[3]
See also
References
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