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Nickel is a hard, naturally-occurring silver-white metal, with a chemical symbol of Ni and an atomic number of 28. It is the fifth most common element found on Earth, where it is mostly found in the Earth’s crust and core. It is highly resistant to corrosion and oxidation and can be fully recycled. Nickel is classed as a Class 1A carcinogen, as it is known to show cancer in humans. [1,2]
