141Pr
141Pr is the chemical symbol for the isotope of the element praseodymium with a mass number of 141. This means it has 59 protons and 82 neutrons in its nucleus. Praseodymium is a rare earth metal. 141Pr is the only stable isotope of praseodymium. This is significant because many other isotopes of elements are radioactive, meaning they decay over time. The stability of 141Pr makes it a natural form of praseodymium found on Earth. Its abundance in nature is due to its lack of radioactive decay.
The nuclear properties of 141Pr are well-studied. It possesses a nuclear spin of 7/2. Its stability means