Sodium chloride (NaCl) is a compound, not a reaction. It's formed from the reaction of two elements:

Reactants:

* Sodium (Na): A soft, silvery-white alkali metal.

* Chlorine (Cl2): A yellowish-green, highly reactive gas.

Product:

* Sodium chloride (NaCl): A white crystalline solid, commonly known as table salt.

The chemical reaction is:

2 Na + Cl2 → 2 NaCl

This reaction is highly exothermic, meaning it releases heat.