= Non-stoichiometric compounds
{wiki=Non-stoichiometric_compounds}
Non-stoichiometric compounds are materials that do not conform to a fixed ratio of their constituent elements, meaning their composition can vary between certain limits. Unlike stoichiometric compounds, which have a well-defined, consistent chemical formula (e.g., water \\(H_2O\\) or sodium chloride \\(NaCl\\)), non-stoichiometric compounds can have varying amounts of one or more elements, leading to different properties.
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