How can you determine the solubility of salts containing alkaline earth metal ions? Compare them to where they are positioned on the periodic table.  Give details. 

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Generally speaking, the higher the ionization energy a metal has the more soluble its salt will be.  However, the rules of solubility for ionic compounds are best explored through charts similar to the one below.  Once a suitable anion is found that will allow for solubility in aqueous solution, the higher the coresponding alkali metal is in the Periodic Table the more soluble it will be: beryllium chloride is more soluble than barium chloride.

http://wps.prenhall.com/wps/media/objects/3080/3154577/blb0405/blb04t02.gif

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