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Metal cation ionic solids dissolve in solution exothermically.

Which of the following BEST explains this phenomenon?


The hydrogen bonding in the water breaks apart, releasing large amounts of energy that are used to force a breaking of the ionic structure.


The free floating electrons in the metal cations provide a large measure of electricity when the ionic solid is broken down in the water.


The breaking of the ionic structure, which releases bond energy causing the solution to be exothermic.


The attraction of the cations and anions to the dipoles in water, resulting in a release of energy.

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