Definition

A type of isomer where the atoms are connected in the same order but arranged differently in space.

Example

Stereoisomers can have very different properties despite having the same molecular formula.

Conversation

Have you ever heard of a stereoisomer?

Yeah, I think it's about how molecules are arranged in space.

Exactly! It's fascinating how they can have the same atoms but behave differently.

Right? Chemistry is full of surprises like that.

Synonyms & Antonyms

Root Explanation

Stereoisomer → It is formed from "stereo-" (from Greek "stereos", meaning solid or three-dimensional) and "isomer" (from Greek "isos", meaning equal, and "meros", meaning part). The word refers to compounds that have the same molecular formula but differ in the arrangement of atoms in three-dimensional space.

Memory Tip

Think of 'solid' ('stereo-') structures that are 'equal parts' ('isomer') but arranged differently in space — that’s what a stereoisomer is.

Visually Confused Words