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name of the unified three-iodine structure. Examples include nitrogen triiodide (NI₃) and phosphorus triiodide (PI₃), each of which have a central atom to which each of the three iodine atoms is bonded. To clarify the structural nature of a chemical with three iodides, other naming schemes can be used. Typical options are to use tris as an alternative prefix, such as the chemical thallium tris(iodide), where there three "iodide" units,

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