In the context of ionic charges, what is the term for a positively charged ion?

A positively charged ion is specifically referred to as a cation. This term comes from the Greek word 'kation,' which means "going down," reflecting its movement towards the negative electrode, or cathode, in an electrolytic cell. Cations are formed when an atom loses one or more electrons, resulting in a net positive charge due to the higher number of protons compared to electrons.

Understanding the distinction between ions is crucial for those working in fields such as medical and health sciences, especially in hemodialysis. The balance of ions is vital in maintaining homeostasis in the body, and recognizing the role of cations—like sodium, potassium, and calcium—can help in assessing and managing electrolyte imbalances in patients undergoing dialysis treatment. This knowledge is essential for effective patient care and optimizing treatment outcomes in dialysis settings.