Which prefix refers to a compound where one or more bromine atoms are present?

The prefix "bromo-" specifically indicates the presence of bromine atoms in an organic compound. In organic nomenclature, each of the halogens is represented by a specific prefix which is used to describe the substitution of that halogen in a compound's structure.

For instance, when a compound contains bromine substituents, the "bromo-" prefix is attached to the name of the longest carbon chain or the main functional group, helping to convey important information about its structure and reactivity. By using this prefix, chemists can readily identify the nature of the halogen present, allowing for clearer communication and better understanding of the compound's chemistry.

In contrast, other prefixes like "iodo-", "chloro-", and "fluoro-" refer specifically to the presence of iodine, chlorine, and fluorine atoms, respectively. Each of these prefixes serves a similar function, designating which halogen is present in the molecule. Therefore, when identifying compounds with bromine, "bromo-" is the correct and relevant prefix to use.