2K + I₂ → 2KI

Represents a single displacement reaction.

Here's why:

* Single Displacement: In this type of reaction, a more reactive element displaces a less reactive element from a compound.

* In this case: Potassium (K) is more reactive than Iodine (I). It displaces iodine from the iodine molecule (I₂) to form potassium iodide (KI).

Let me know if you'd like to know more about different types of chemical reactions!