Gold and platinum are extensively used to make fine jewelry exposed to sweat and air, whereas iron is…
Gold and platinum are extensively used to make fine jewelry exposed to sweat and air, whereas iron is unsuitable for uncoated fine jewelry. What chemical property explains this choice?
Iron is a soft non-metal that breaks easily under physical stress.
Gold and platinum are unreactive noble metals that do not tarnish or rust in air and moisture.
Iron is an electrical insulator whereas gold conducts thermal energy effectively.
Gold has a much lower melting point than iron, making it easy to wash with soap.
Solution
Gold and platinum are noble metals that resist oxidation and corrosion when exposed to air, sweat, and moisture, maintaining their luster over long periods.