The periodic symbol of Nickel is Ni. It has an atomic number of 28. The appearance of nickel is lustruous and silvery with a high shine and gold tinge. Coins made of pure nickel were first used in Switzerland in 1881. In the U.S., the term nickel was originally used for the Indian 1-cent coin made up of copper and nickel. This coin eventually evolved into the 5-cent nickel we know today.
Nickel is a very commonly known substance, it is most valued for the alloys it forms, especially superalloys like stainless steele. Nickel is one of four elements that are magnetic at or around room temperature (the others being cobalt, iron, and gadolinium). Nickel is used in stainless steel, magnets, coins, rechargeable batteries, and electric guitar strings.
Many people experience a contact allergic reaction to nickel, most commonly seen in those who wear earrings as an itchy and inflamed area around around the peirced area.
Nickel is found in an enzyme called urease which assists in the hydrolysis of urea.
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