Nickel (Ni) is the Element with atomic number 28, symbol Ni. It has five stable Isotopes.
It is thought be the product of Supernova Nucleosynthesis. Nickel-58, the most common isotope: several nucleosynthesis paths lead to it. Nickel-56 is in the Alpha Ladder, is unstable, and leading to the stable isotope Iron-56 through two Beta Decays. Nickel-62 is very stable, having the highest Binding Energy of any nucleus (more than Iron-56), and is not abundant because nucleosynthesis paths to it have low-probability steps.