Harold Urey and Harmon Craig plotted the fraction of this element in elemental form versus its fraction in sulfides and hydrides in order to study the composition of chondrites.
Harold Urey and Harmon Craig plotted the fraction of this element in elemental form versus its fraction in sulfides and hydrides in order to study the composition of chondrites. In x-ray observations of active galactic nuclei, the ionization state of the emitting material can be inferred from the energy of the k-alpha line of this element. This element's isotopes 58 and 56 have the second and third highest binding energies per nucleon, respectively, making this element the last other than nickel and cobalt to be produced in stellar cores via fusion. The convective circulation of the liquid form of this element generates the dynamo effect, as this element makes up most of the Earth's outer core. For 10 points, identify this element, a metal which on Earth is typically extracted from ores like magnetite and hematite.
Harold Urey and Harmon Craig plotted the fraction of this element in elemental form versus its fraction in sulfides and hydrides in order to study the composition of chondrites.
iron