What would be the formula between Iron III and Sulfur?

1 Answer
Jan 13, 2016

Answer:

#Fe_2S_3#.

Explanation:

Iron III I has a valency of #3+# and sulphur, being in group 6< has a valency of #2-#.

A molecule must have a net charge of zero and so we would need 3 sulphur atoms and 2 iron atoms in order to form a neutral molecule of Iron(III)sulphide. (#6+ and 6-#).

Hence the formula is #Fe_2S_3#.