Isobarar

Isobarar are a group of chemical elements that have the same mass number but different atomic numbers. This means they contain the same total number of protons and neutrons in their nucleus, but the number of protons, which defines the element, is different. Consequently, isobarar are isotopes of different elements. For example, Argon-40 (18 protons, 22 neutrons) and Potassium-40 (19 protons, 21 neutrons) are isobarar because both have a mass number of 40.

The concept of isobarar is important in nuclear physics and chemistry. Because they have the same mass number, isobarar often have similar nuclear properties, although their chemical properties will differ due to their distinct atomic numbers and electron configurations. The study of isobarar helps in understanding nuclear stability and decay processes. For instance, many radioactive decay chains involve transitions between isobaric nuclei. The term "isobar" itself comes from the Greek words "isos" meaning "equal" and "baros" meaning "weight," referring to their equal mass.