In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions), which affects lattice energy (a measure of the force needed to pull ions apart). The lattice energy affects the enthalpy of solution, which can affect solubility. Based on ion sizes, rank these compounds by their expected solubilities in water. Most soluble Least soluble Answer Bank CsBr CsI CsF CsCl

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