Which one of the following is the IUPAC name of [Ag(NH₃)₂] [Ag(CN)₂] ?
Diammine dicyanidodisilver(I)
Diammine dicyanidoargentate(I)
Diamminesilver(I) dicyanidoargentate(I)
Dicyanidoargentate(I) diamminesilver(I)
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UPSC Geoscientist – 2024
For the anion [Ag(CN)₂]⁻: The metal is Silver (Ag). Cyanide (CN⁻) is an anionic ligand named ‘cyanido’ or ‘cyano’. There are two cyanido ligands (dicyanido). The charge of the complex is -1. Since CN⁻ has a charge of -1, Ag + 2(-1) = -1, so the oxidation state of Ag is +1. As it is an anion, the suffix ‘-ate’ is added to the Latin name of the metal (Argentum for Silver), followed by the oxidation state. Name: Dicyanidoargentate(I).