Bromine and chlorine do not react to form a new compound. They are both halogens, and their reactivity is similar. They can coexist as a mixture, but they don't readily form a chemical bond with each other.

Here's why:

* Similar electronegativity: Bromine and chlorine have similar electronegativity values, meaning they have a similar ability to attract electrons. This makes it less likely for them to form a strong bond.

* Weak intermolecular forces: Even if a bond were to form, it would be weak due to the similar size and electronegativity of the atoms.

Therefore, the result of bromine plus chlorine is simply a mixture of the two halogens.