Which mineral serves as the major intracellular fluid cation?

Question

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Potassium is the major intracellular fluid cation, meaning it is the most abundant positively charged ion within cells. Other options such as calcium, chloride, and sodium can be found in varying concentrations both inside and outside of cells. However, potassium is specialized for intracellular functions and is crucial for maintaining proper cell function and communication.

Which Mineral Serves as the Major Intracellular Fluid Cation