What is the most ductile metal?

The most ductile and malleable metal is gold. It can be drawn into a wire of single-atom width, and then stretched considerably before it breaks. A single gram of gold can be beaten into an 11 sq ft sheet. Gold leaf can be beaten thin enough to become semi-transparent. Gold semi-transparent sheets reflect infrared light, making them useful as heat shields in spacesuit visors. Gold’s high malleability and conductivity of electricity have led to its continued use in electrical connectors in computerized devices.

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