The molar mass of iron is 55.8 grams/mole. The element also has a chemical symbol of Fe and an atomic number of 26. Iron can be found in group 8 and period 4 on the periodic table in the transition metal group.
Iron is the most common element found on Earth. It forms much of the Earth's outer crust and its inner core. In its relative abundance, iron exists in many different oxidation states. Each oxidation state of iron can form different compounds and bonds with other elements. The most common oxidation states of molecular iron include +2 and +3.