Combinations of iron(II), H2O, Cl-, and NH4+ can result in the formation of a series of 7 coordination compounds, one of which is [Fe(OH2)6]Cl2.   a. Write the modern formulas for the other 6 members of this series. b. How many chlorides would be precipitated from [Fe(OH2)6]Cl2 upon the reaction with AgNO3?

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