Nickel could be an element with the image atomic number 28 Associate in Nursingd number 28. it’s a silvery-white lustrous metal with a small golden tinge. Nickel belongs to the transition metals and is difficult and ductile. Pure nickel, fine to maximize the reactive surface area, shows a big chemical activity, however, larger items are slow to react with air below normal conditions as a result of a compound layer forming on the surface and preventing any corrosion.