Match the substance with its chemical formula. 1. h+ hydroxide ion 2. h3o+ hydronium ion 3. oh- hydrogen ion

             Hydroxide Ion  =  OH⁻

            Hydronium Ion =  H₃O⁺

             Hydrogen Ion  =  H⁺

                        Ions are those species which either contain positive charge or negative charge. Ions are further classified as Monoatomic ions (a single atom containing positive or negative charge) or Polyatomic Ions ( group of Atoms containing positive or negative charge).

                        In given three ions the Hydroxyl Ion and Hydronium Ions are the examples of polyatomic ions while, Hydrogen ion is the example of monoatomic ion.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.