10. Determine the protons, neutrons and electrons for potassium

Potassium, with the atomic number 19, has 19 protons. In a neutral atom, the number of electrons equals the number of protons, so potassium also has 19 electrons. To find the number of neutrons, you subtract the atomic number from the atomic mass. The most common isotope of potassium has an atomic mass of approximately 39, which means it has around 20 neutrons (39 - 19 = 20). Potassium is essential for life and plays a critical role in cellular function, particularly in nerve transmission and muscle contraction. It's found in foods like bananas, potatoes, and avocados. So, next time you grab a potassium-rich snack, you're fueling your body's electrical systems with this vital mineral!