What Is the Most Abundant Isotope of Potassium?

Potassium is a chemical element with the symbol K and atomic number 19. It is an alkali metal that is essential for various biological processes in the human body. Potassium has three naturally occurring isotopes, namely K-39, K-40, and K-41.

The average atomic mass of potassium is 39.098 amu. This number is a weighted average of the masses of all naturally occurring potassium isotopes, taking into account their relative abundances. Given the isotopes K-39, K-40, and K-41, we can calculate the weighted contribution of each isotope to the average atomic mass.

If the average atomic mass of potassium is 39.098 amu, the most common isotope is expected to be K-39. This is because K-39 appears to be the most common isotope in nature based on its atomic mass being closest to the estimated average atomic mass of potassium.

In conclusion, K-39 is most likely the potassium isotope that is the most common. Understanding the relative abundance of isotopes and their contributions to the average atomic mass helps us determine the most abundant isotope of an element like potassium.