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The five cent US coin called "nickel" is now made of 75% copper and 25% nickel

The five cent Canadian coin called "nickel" is now made of 94.5% steel, 3.5% copper with 2% pure nickel plating; between 1946 and 1981 the Canadian Coins were pure nickel.

Nickel is an element made of electrons, protons and neutrons

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