Problem: Write the formulas for the following ionic compounds:e) sodium oxidef) iron sulfide (containing theFe2+ ion)

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We are being asked what will be the chemical formula of an ionic compound. Elements have common charges based on what group they belong to in the periodic table.

Elements gain and lose electrons so that they have the same number of electrons as the noble gases.

Metals → lose electrons and gain positive (+) charge to become more like their closest noble gas


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Problem Details

Write the formulas for the following ionic compounds:

e) sodium oxide

f) iron sulfide (containing theFe2+ ion)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Writing Ionic Compounds concept. You can view video lessons to learn Writing Ionic Compounds. Or if you need more Writing Ionic Compounds practice, you can also practice Writing Ionic Compounds practice problems.