nikkeliatomin

A nickel atom is the basic unit of the chemical element nickel, which has the atomic number 28 and the symbol Ni. It belongs to the transition metals in group 10 of the periodic table. Nickel atoms have 28 protons in their nucleus, with the most common isotope having 30 neutrons, giving it a mass number of 58. The electron configuration of a neutral nickel atom is [Ar] 3d8 4s2, though it can exhibit various oxidation states in chemical compounds.

Nickel has five stable isotopes, with nickel-58 being the most abundant at approximately 68% of natural nickel. Nickel atoms are relatively hard and ductile, with good electrical conductivity. They are commonly found in the Earth's crust, often combined with other elements in ores such as pentlandite and garnierite.

Nickel atoms are widely used in various industrial applications, including the production of stainless steel, batteries, and coins. Their ability to form alloys with other metals makes them valuable in manufacturing. Nickel atoms also play a role in biological systems, where they serve as essential components in certain enzymes.