The non-metallic ions obtained from acids, bases or salts, i.e. from electrolytes, on ionisation in their aqueous solution are called acidic radicals. On ionisation of sodium chloride, chloride ion. CT is obtained which is an acid radical.
Some common acidic radicals are chloride, Cl– , hydroxide, OH-1 , nitrate NO31 , oxide, O-2, carbonate CO-2 , sulphate, SO42 , phosphate, PO43 .