2. Substances that contain hydrogen carbonate ions (HCO3") always form soluble compounds. This implies that the 1) energy needed to break apart the ionic solid is less than other substances. 2) covalent bonds are greater in the ammonium compound compared to other substances. 3) energy needed to break apart the ionic solid is greater than other substances. 4) covalent bonds are weaker in the ammonium compound compared to other substances

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