We’re asked to suggest an explanation as to why Copper, silver, and gold have all been known since ancient times, whereas most of the other metals have not.
Recall that Copper (Cu), Silver (Ag) and Gold (Au) are considered as transition metals and were all used as a form of currency in ancient times.
Copper, silver, and gold have all been know since ancient times, whereas most of the other metals have not. Can you suggest an explanation?
Figure Discovering the elements.
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