The reaction between 2 NaCl and F2 is a displacement reaction. In this reaction, fluorine (F2) is a more reactive halogen than chlorine (Cl), so it displaces chlorine from sodium chloride (NaCl). This results in the formation of sodium fluoride (NaF) and chlorine gas (Cl2). The balanced chemical equation for this reaction is:
This type of reaction is commonly referred to as a halogen displacement reaction, where a more reactive halogen displaces a less reactive one from its compound.