Explore BrainMass

Explore BrainMass

    Compound Formula

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Write the formula for these compounds:
    a) potassium sulfide
    b) iodine heptafluride
    c) iron(III)chromate

    © BrainMass Inc. brainmass.com November 24, 2022, 11:57 am ad1c9bdddf

    Solution Preview

    Hello and thank you for using BrainMass!

    Sulfide is a a combination of Sulfur atom(s) with oxidation number -2 with other elements.

    Potassium is an alkali metal with one electron in the outer shell, Thus it has an oxidation number +1 (it is very happy to donate this electron)

    To balance the compound (having total oxidation number 0) we need one sulfur (-2) and two potassiums (+1)

    Thus (underscore denotes a subscript):

    potassium sulfide is K_2S (metal first).

    Iodine and Fluor are ...

    Solution Summary

    The solution includes explanation and chemical formula. The solution is 285 words.