ATOMIC & NUCLEAR PHYSICS INORGANIC CHEMISTRY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site transition element A metallic element that has an incomplete inner shell. Transition elements occupy the short groups in the periodic table – i.e., groups IB through VIIB and group VIII – in which the d-orbitals are being filled. In general the transition elements are dense, hard, and of high melting point. Their electronic structures, with many loosely-bound unpaired d electrons, account for their properties: they exhibit many different valence states, form stable ligand complexes, are mostly colored and paramagnetic, and are generally good catalysts. They form many stable organometallic compounds and carbonyls (compounds in which carbon monoxide, CO, acts as a ligand) with specially stable "push-pull" bonding. The second and third row transition elements are less reactive than the first row, and stable in higher valence states. Many transition elements are technologically important. Table of transition elements element name symbol atomic no. Scandium Sc 21 Titanium Ti 22 Vanadium V 23 Chromium Cr 24 Manganese Mn 25 Iron Fe 26 Cobalt Co 27 Nickel Ni 28 Copper Cu 29 Zinc Zn 30 Yttrium Y 39 Zirconium Zr 40 Niobium Nb 41 Molybdenum Mo 42 Technetium Tc 43 Ruthenium Ru 44 Rhodium Rh 45 Palladium Pd 46 Silver Ag 47 Cadmium Cd 48 Tantalum Ta 73 Tungsten W 74 Rhenium Re 75 Osmium Os 76 Iridium Ir 77 Platinum Pt 78 Gold Au 79 Mercury Hg 80 Rutherfordium Rf 104 Dubnium Db 105 Seaborgium Sg 106 Bohrium Bh 107 Hassium Hs 108 Meitnerium Mt 109 Uununnilium Uun 110 Unununium Uuu 111 Ununbium Uub 112 Related categories    • ATOMIC AND NUCLEAR PHYSICS    • INORGANIC CHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP