Here's the breakdown of electrons, protons, and neutrons in a potassium atom:

* Protons: 19

* Neutrons: 20 (Most common isotope, Potassium-39)

* Electrons: 19

Explanation:

* Atomic Number: Potassium's atomic number is 19. This means it has 19 protons in its nucleus.

* Protons and Neutrons: The number of protons defines the element. The number of neutrons can vary slightly, creating isotopes of the element. The most common isotope of potassium is Potassium-39, which has 20 neutrons.

* Electrons: Atoms are electrically neutral. To balance the positive charge of the 19 protons, a potassium atom also has 19 electrons orbiting the nucleus.

Let me know if you have any other questions!