monoatomär

Monoatomic refers to a substance or element that consists of only one atom per molecule. This term is often used in the context of gases, where the atoms are not bonded to each other. Monoatomic gases are typically noble gases, such as helium, neon, argon, krypton, xenon, and radon, which exist as single atoms in their natural state. These gases are characterized by their low boiling and melting points, as well as their low reactivity due to their full valence electron shells.

The term "monoatomic" is derived from the Greek words "mono," meaning single, and "atomos," meaning indivisible. In a monoatomic gas, each atom is an independent entity, moving freely and independently of other atoms. This characteristic is in contrast to polyatomic gases, which consist of molecules made up of multiple atoms.

Monoatomic gases are often used in various applications, such as in lighting (neon signs) and in cryogenics (liquid helium). They are also important in scientific research, particularly in the study of atomic and molecular physics. The behavior of monoatomic gases can be described using the ideal gas law, which assumes that the gas particles do not interact with each other and occupy negligible volume.

In summary, monoatomic refers to substances or elements that consist of single atoms per molecule. Noble gases are the most common examples of monoatomic gases, and they are characterized by their low reactivity and simple behavior, which can be described using the ideal gas law.