Nomenclature for Binary Ionic Compounds?

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Nomenclature for Binary Ionic Compounds?

Enter the formula for each of the following binary ionic compounds.
magnesium phosphide

aluminum selenide

cobalt(III) telluride

iron(III) sulfide

2007-09-29 06:36:45 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

The cation always comes first and the anion second.

When there is a roman numeral, it is telling you what the valence state of the cation is, since transitional cations have more than one possiblity.

For example, Iron (III) Sulfide is Fe2S3. This is because the Iron is +3 and the Sulfur ion is -2.

2007-09-29 06:47:31 · answer #1 · answered by reb1240 7 · 1⤊ 0⤋

Mg3P2

Al4Se3

Co2Te3

Fe2S3

2007-09-29 07:00:23 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 1⤋