Question

Which is the main negative mineral ion in extracellular fluid?

• A. $S{O}_4^{2-}$
• B. $C{l}^{-}$
• C. $N{O}_3^{-}$
• D. $O{H}^{-}$

Answer 1

The correct option is B $C{l}^{-}$

Chloride is the most common negative ion along with sodium in the extracellular fluid. Potassium, magnesium and phosphate are most abundant intracellular ions. Sodium and chloride account for 80% of the materials in the extracellular fluid.

So, option B is the correct option.