Yes, if the iron ion is iron(II), which means it has a charge of 2+. FeS is called iron(II) sulfide. If the iron ion is iron(III), with a charge of 3+, then the formula unit would be Fe2S3, and would...
I'm not 100% but I think it's Fe0'3'2
just go to this site:http://www.webqc.org/balance.php
The balanced equation for iron (fe) and sulphar(s) is ( fe + s = fe2s )
When CS2 is added to reaction mixture Fe + S = FeS , it would dissolve the excess 'S' leaving the solids Fe and FeS without any change.