Definition

Describing a substance that consists of only one atom, such as helium, which exists as single atoms rather than in pairs or groups.

Example

Helium is a monatomic gas, meaning it is made up of individual atoms rather than molecules.

Conversation

Did you know that helium is a monatomic gas?

Really? I didn't realize it was made of single atoms.

Yeah, it’s interesting how some gases are monatomic while others are not.

That makes sense; it probably affects their properties and behavior.

Synonyms & Antonyms

Root Explanation

Monatomic → It is formed from "mono-" (meaning one) and "atomic" (from Greek "atomos", meaning indivisible). The word "monatomic" refers to a substance that consists of single atoms, rather than molecules or clusters of atoms.

Memory Tip

Think of 'mono-' meaning one, and 'atomic' referring to indivisible particles. This helps you remember that 'monatomic' describes something made up of single, indivisible atoms.

Visually Confused Words