Nickel has several isotopes, with the most notable ones being: 1. **Nickel-58 (¹⁵⁸Ni)**: This is the most abundant isotope of nickel, making up about 68% of natural nickel. It is stable. 2. **Nickel-60 (¹⁶⁰Ni)**: Another stable isotope, it accounts for about 26% of natural nickel.
