Answer:
Gold, silver, and copper are quite soft metals and so are easily damaged in daily use as coins. Precious metal may also be easily abraded and worn away through use. In their numismatic functions these metals must be alloyed with other metals to afford coins greater durability.
What is the special property of metal?
Hardness – metals tend to be hard and resistant to deformation. Malleability & Ductility – metals can bend and change shape without breaking. Conductivity – metals tend to be good conductors of heat and electricity. Luster – metals have a unique, shiny visual appearance.
Explanation:
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