View source for Transition metal monoxides

__NOTOC__
Unless otherwise noted crystal structure is '''simple cubic like table salt NaCl'''. <br>
Typical (with a few exceptions) is '''1900°C melting point and Mohs 5'''.

== Monometal monoxides ==

* ScO - no monoxide? (well its a rare earth anyway)
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* TiO - [https://en.wikipedia.org/wiki/Titanium(II)_oxide Titanium(II)_oxide] - [http://webmineral.com/data/Hongquiite.shtml Hongquiite (webminera.com)] - 4.96g/ccm | 5.36g/ccm(mineral) - '''Mohs 5 to 6''' - 1,750°C
* VO - [https://en.wikipedia.org/wiki/Vanadium(II)_oxide Vanadium(II)_oxide] - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C
* CrO - [https://en.wikipedia.org/wiki/Chromium(II)_oxide Chromium(II)_oxide] - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ??
* MnO - [https://en.wikipedia.org/wiki/Manganese(II)_oxide Manganese(II)_oxide] - [https://en.wikipedia.org/wiki/Manganosite Manganosite] - 5.364g/ccm - '''Mohs 5 to 6''' - 1,945 °C - water insoluble
* FeO - [https://en.wikipedia.org/wiki/Iron(II)_oxide Iron(II)_oxide] - [https://en.wikipedia.org/wiki/W%C3%BCstite Wüstite] - 5.7g/ccm - '''Mohs 5.0 to 5.5''' - 1,377°C - water insoluble
* CoO - [https://en.wikipedia.org/wiki/Cobalt(II)_oxide Cobalt(II)_oxide] - no mineral? - 6.45g/ccm - Mohs ?? - 1,933°C - water insoluble
* NiO - [https://en.wikipedia.org/wiki/Nickel(II)_oxide Nickel(II)_oxide] - [https://en.wikipedia.org/wiki/Bunsenite Bunsenite] 6.898g/ccm - '''Mohs 5.5''' - 1,955°C - watersolubility negligible
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* CuO - [https://en.wikipedia.org/wiki/Copper(II)_oxide Copper(II)_oxide] - [https://en.wikipedia.org/wiki/Tenorite tenorite] 6.5g/ccm - '''Mohs 3.5 to 4.0''' - 1,326 °C - water insoluble - '''Monoclinic''' 
* ZnO - [https://en.wikipedia.org/wiki/Zinc_oxide Zinc_oxide] - [https://en.wikipedia.org/wiki/Zincite] - 5.64–5.68g/ccm - '''Mohs 4''' - 1,974°C (decomposes) - watersolubility minute - '''Hexagonal''' 

== Dimetal monoxides ==

* Cu<sub>2</sub>O - [https://en.wikipedia.org/wiki/Copper(I)_oxide Copper(I)_oxide] - [https://en.wikipedia.org/wiki/Cuprite Cuprite] - 6.14g/ccm - '''Mohs 3.5 to 4''' - 1,232°C - water insoluble - '''cubic (but...)'''
There is more metal than oxygen but the material is still transparent. Odd.<br>
Maybe because copper is pretty noble metal?
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More scarce silver (in the copper group below copper) does the same but the resulting material has much worse properties.
* Ag<sub>2</sub>O - [https://en.wikipedia.org/wiki/Silver_oxide Silver_oxide] - 7.14g/ccm - '''Mohs ??''' - decompoes ≥ 200 °C - slightly water soluble - '''cubic (but...)'''

= Related =

* [[Binary gem-like compound]]

= External links =

* [https://en.wikipedia.org/wiki/Category:Transition_metal_oxides Wikipedia Category:Transition_metal_oxides]

[[Category:Base materials with high potential]]