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Metals such as α-iron (Fe) (ferrite), chromium (Cr), vanadium (V), molybdenum (Mo), and tungsten (W) possess BCC structures. These BCC metals have two properties in common, high strength and low ductility (which permits permanent deformation).
Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Coordination Numbers and the Structures of Metals. The coordination numbers of the four structures of metals are summarized in the table below. It is easy to understand why metals pack in hexagonal or cubic closest-packed structures.
Crystal structures. Most metals and alloys crystallize in one of three very common structures: body-centered cubic (bcc), hexagonal close packed (hcp), or cubic close packed (ccp, also called face centered cubic, fcc).
The observed crystal structures of many metals can be described as a nearly mathematical close-packing of equal spheres. A simple model for both of these is to assume that the metal atoms are spherical and are packed together as closely as possible.
Explore a curated list of tables and charts that offer comprehensive data on various materials properties, such as density, melting point, hardness, and more.
These elemental polymorphs along with a few examples of their common alloys and compounds provide a fascinating contrast of unusual material structures and properties representing disparate portions of the periodic table.
