Here's why:

* Single displacement reactions involve one element replacing another element in a compound.

* In this case, fluorine (F2) is more reactive than chlorine (Cl).

* Fluorine displaces chlorine from sodium chloride (NaCl), forming sodium fluoride (NaF) and releasing chlorine gas (Cl2).

Here's the breakdown:

* Reactants:

* Sodium chloride (NaCl)

* Fluorine gas (F2)

* Products:

* Sodium fluoride (NaF)

* Chlorine gas (Cl2)

The general formula for a single displacement reaction is:

A + BC -> AC + B

Where:

* A is the more reactive element

* B is the less reactive element

* C is the element that is being displaced

Let me know if you have any other reactions you'd like to identify!