Atomicity (chemistry)

In chemistry, atomicity refers to the number of atoms that make up a molecule of a substance. It indicates how many atoms of an element are bonded together in a molecule or how many different atoms are present in a compound. There are two main contexts in which atomicity is commonly discussed: 1. **Elementary Substances**: - **Monatomic**: Substances composed of single atoms (e.g., noble gases like helium, neon).