. . . "Symmetrical molecules ??? ??? ??? Acid is a compound which when dissolved in water, donates it H+ ions (Protons) to the surrounding water ??? ??? ??? Ternary Ionic Compounds 3 or more elements in their formulas, always contain at least one polyatomic ion, usually the name ends in 'ite' ??? ??? ??? Binary Ionic Compounds 2 elements, metal bonded with a non-metal, names end in 'ide', always has a ne" .