. . . "A measure of the concentration of magnesium (Mg) in solution. (pMg = -log₁₀[Mg²⁺])"^^ . "A measure of the concentration of magnesium (Mg) in solution. (pMg = -log₁₀[Mg²⁺])"^^ . "A measure of the concentration of magnesium (Mg) in solution. (pMg = -log₁₀[Mg²⁺])"^^ . . . .