Question

What is the color of copper, iron and cobalt ​

Answer 1

Answer:

Copper is the most heavily used coinage metal due to its electrical properties, its abundance (contrasted to silver and gold), and the attractiveness of its alloys—brass and bronze.

Zinc is used in alloys with copper to create a harder metal known as brass.

In galvanization, zinc coats iron by oxidizing to form a protective layer of zinc oxide (ZnO) that protects the iron from rust.

Cobalt and nickel are trace elements with properties similar to iron.

Answer 2

Answer:

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