nikell

Nikell, also known as nickel, is a chemical element with the symbol Ni and atomic number 28. It is a lustrous, silvery-white, hard, and ductile metal. Nickel is a member of the transition metals and is located in the first row of the d-block of the periodic table. It is found in the Earth's crust and is a significant component of the Earth's core.

Industrially, nickel is primarily used in the production of stainless steel, where it imparts corrosion resistance and strength. It is also used in electroplating to provide a decorative and protective coating on other metals. Nickel alloys are employed in various applications, including aerospace, automotive, and marine industries, due to their high temperature strength and resistance to corrosion.

Nickel is an essential trace element for humans and is involved in various biological processes. However, exposure to high levels of nickel can lead to allergic reactions and other health issues, particularly through skin contact or inhalation. The element was discovered by the Swedish chemist Axel Fredrik Cronstedt in 1751, who named it from the German word "Kupfernickel," meaning "devil's copper," as miners were unable to extract copper from the ore it was found in.