Nickel atoms have 28 electrons and can exhibit several oxidation states, including +2 and +3. In its elemental form, nickel is a strong and malleable metal. When combined with other elements, it forms alloys with enhanced properties, making it valuable for various industrial applications. Nickel is commonly used in electroplating and stainless steel production, where it imparts corrosion resistance and strength. Additionally, nickel is employed in batteries, electronics, and as a catalyst in chemical reactions.