That's correct! Bromine is the only nonmetal that exists as a liquid at room temperature.

Here's why:

* Nonmetals generally have weaker intermolecular forces, making them more likely to be gases at room temperature.

* Bromine has a relatively high molecular weight and strong intermolecular forces (van der Waals forces) which allow it to remain liquid at room temperature.

Let me know if you have any other questions!