The chemical equation for the reaction between solid aluminum metal and liquid diatomic bromine is:

2 Al (s) + 3 Br₂ (l) → 2 AlBr₃ (s)

Here's a breakdown:

* 2 Al (s): This represents two moles of solid aluminum (Al).

* 3 Br₂ (l): This represents three moles of liquid diatomic bromine (Br₂).

* 2 AlBr₃ (s): This represents two moles of solid aluminum bromide (AlBr₃), the product of the reaction.

Important Note: This reaction is highly exothermic and releases a lot of heat. It's important to handle bromine with extreme caution due to its corrosive and toxic nature.