KnowraNon-stoichiometric compoundLinked fromLinked fromThe 12 pages that link to Non-stoichiometric compound, each with the reason it gives.All 12Broader topic 1Related 6Narrower topic 2Compared with 3Chemical formulaRelated: Such materials show why some formulas use variable composition rather than fixed integer subscripts.Point defectRelated: Point defects can change a crystal's atomic ratios without destroying its crystalline structure.Oxygen vacancyNarrower topic: A population of oxygen vacancies often produces oxygen-deficient nonstoichiometric oxides.Chemical compoundCompared with: It qualifies the idea of fixed proportions in compounds, especially in crystalline solids.Law of definite proportionsCompared with: These solids limit the law’s strict application beyond ordinary fixed-composition compounds.Fluorite structureRelated: Many fluorite oxides depart from ideal composition as vacancies and changes in oxidation state develop.Metal oxideRelated: Some oxides accommodate oxygen vacancies or excess oxygen without changing their basic structure.Claude Louis BertholletBroader topic: Some modern solids vindicate a limited version of Berthollet’s claim that composition can vary.Law of multiple proportionsCompared with: Such solids complicate simple fixed-composition examples of the law.Tantalum carbideRelated: Tantalum carbide can contain carbon vacancies, so its composition need not be exactly TaC.Cobalt(II) oxideNarrower topic: Cobalt(II) oxide commonly contains cobalt vacancies and can depart from ideal CoO composition.Cerium(IV) oxideRelated: Reduced ceria can depart from the ideal CeO₂ oxygen-to-cerium ratio.