transition elements

• transition element

  d block element that has an ion with an incomplete d- sub shell
• properties of transition metals

  form compound in which the transition metal has different oxidation states • form colored compounds •can act as catalysts
• ligand

  molecule or ion that donates a pair of electrons to a central metal ion to form a coordinate bond
• monodentate,bidentate, multidentate ligands

  ligands can donate one, two, or multiple pairs of electrons respectively to a central metal ion
• complex ion

  a central metal ion bonded to ligands by coordinate bonds
• copper

  [cu(h2o)6]^2+ : blue solution

  [CuCl4]: yellow solution

  [Cu(NH3)4(H2O)2]^2 : dark blue solution