Relating to or describing a compound containing both chlorine and gold, especially chloroauric acid.
From 'chloro-' + 'auric' (relating to gold in higher oxidation state, from Latin 'aurum'). The '-ic' suffix in chemistry denotes higher oxidation states compared to '-ous' variants.
Chloroauric acid (HAuCl₄) is the magic ingredient in gold nanoparticle research—when it's reduced with certain chemicals, it creates gold particles so tiny they turn solutions bright red instead of gold, completely changing how light interacts with them.
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