Question

Which of these elements helps the iron to save itself from rusting?


cadmium


copper


nickel


chromium?

Answer 1

Answer:copper

Explanation:

Some metals, such as aluminum and copper, produce a protective layer when they corrode in air. The thin layer that forms on the surface of the metal prevents oxygen from coming into contact with more of the metal atoms and thus “protects” the remaining metal from further corrosion.