The reaction of potassium (K) with fluorine (F₂) is a vigorous exothermic reaction that produces potassium fluoride (KF).

Here's the balanced chemical equation:

2K (s) + F₂ (g) → 2KF (s)

Explanation:

* Potassium (K) is a highly reactive alkali metal.

* Fluorine (F₂) is a highly reactive halogen.

* When these two elements react, they form an ionic bond where potassium loses one electron to become a positively charged ion (K⁺) and fluorine gains one electron to become a negatively charged ion (F⁻).

* These ions then attract each other strongly to form the ionic compound potassium fluoride (KF).

Important Notes:

* This reaction is highly exothermic, meaning it releases a significant amount of heat and light.

* It can be explosive if not conducted carefully.

* Due to its reactivity, this reaction is usually performed in a controlled laboratory setting.