The oxidation number of copper is +1 in [Cu(CN)₄]³⁻, represented as Cu(I). It signifies the charge the central atom would carry if ligands and shared electron pairs were removed.
What is the oxidation number of copper in the complex [Cu(CN)₄]³⁻, and how is it represented?
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The oxidation number of copper in the complex [Cu(CN)₄]³⁻ is +1. This is represented by a Roman numeral in parentheses following the name of the coordination entity, and in this case, it is Cu(I). The oxidation number is determined based on the charge the metal ion would carry if all ligands were removed along with the shared electron pairs. The Roman numeral notation is essential in providing information about the oxidation state of the central metal ion within the coordination complex, aiding in nomenclature and understanding its chemical behavior.