Physiology Cell Physiology and Intercellular Connections dfc05f27 The chief intracellular ion in our body is? A K+ B Na+ C Ca" D Mg" High-Yield Explanation Ans. (a) K+ (Potassium)Ref : Ganong 25th ed. / 9Normal serum potassium= 3.5-5.5 meq/dlIntracellular potassium= 150 meq/dl