The symbol equation for the reaction between sodium (Na) and bromine (Br₂) is:

2Na + Br₂ → 2NaBr

Here's what it means:

* 2Na: Two atoms of sodium are needed for the reaction.

* Br₂: One molecule of bromine (which exists as a diatomic molecule) is required.

* 2NaBr: The reaction produces two molecules of sodium bromide (NaBr), a white ionic compound.

This equation represents a combination reaction, where two elements react to form a single compound.