has been formed because the iron and sulfur atoms are now chemically bonded together. The new substance is called a compound. Other compounds are made from different combinations of atoms ...

However, sulfur's position lower in the periodic table endows its compounds with distinct properties ... an enzyme that contains two iron-sulfur [Fe-S] clusters and SAM. In biotin synthase ...

Carbon (C): Carbon, a nonmetallic element, forms a number of organic and inorganic compounds and can ... and sedimentary deposits. Sulfur, in the form of iron sulfide, can cause steel to be ...