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What are the formulas for the following:
A. Tetrachloroferrate(II) ion
B.Pentammineaquaruthenium(III) ion

Thank you!

  • Chem - ,

    Just write it the way the name tells you.
    Tetrachloro means 4 chlorine atoms. Ferrate(II) means iron with a valence of 2.
    Then you must put a charge on it.
    FeCl4^-2 (iron has a valence of +2, each Cl has a valence of -1 for a total of -4; +2 and -4 = -2 for the ion).


  • Chem - ,

    thank you

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