iron
The Fe 415 in steel mentions its grade. i.e., the yield stress of steel - 415 N/mm2 Some of the various grades of steel are Fe 250, 415, 500, 550
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...
yes she did i was there she broke it at the ex i saw