All are seen more in ECF except: (A) Na+, (B) Cl-, (C) Mg++, (D) HCO-3
Answer is C. Na+,Ca+,Cl- and HCO3- are largely extracellular whereas K+,Mg2+ are predominantly seen in ICF.(Ref: Textbook of physiology AK Jain 5tg edition page no.27)