出典:Wiktionary
出典:『Wiktionary』 (2026/01/26 20:56 UTC 版)
sesquioxide (plural sesquioxides)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/22 01:55 UTC 版)
A sesquioxide is an oxide containing three atoms of oxygen with two atoms (or radicals) of another element. For example, aluminium oxide (Al2O3) is a sesquioxide. Many sesquioxides contain the metal in the +3 oxidation state and the oxide ion, e.g., Al2O3, La2O3. The alkali metal sesquioxides are exceptions and contain both peroxide, ( O22−) and superoxide, (O2−) ions, e.g., Rb2O3 is formulated [(Rb+)4(O22−)(O2−)2]. Sesquioxides of iron and aluminium are found in soil.