CHEM 14A Lecture Notes - Lecture 11: Rare Earth Element, Coordinate Covalent Bond, Coordination Complex

42 views4 pages

Document Summary

Transition metals transition metals: an element characterized by having valence electrons in d orbitals or in f orbitals. Sc -- [ar] 4s 3d -- the 3d is what distinguishes from sc from ca. Chromium and copper show out of sequence con gurations. Cu-- [ar] 4s 3d^10 transition metal ligand number of ligands. Cu -- [ar] 4s 3d^10 -- copper metal. Cu -- [ar] 4s 3d -- loses a electron from an s subshell; no color. Why do some species of copper have a color and others not? when the d subshell of a transition metal ion is partially lled, there is color. Sc -- [ar] 4s 3d -- scandium metal. Sc -- [ar] -- scandium"s only stable ion; no color. Zn -- [ar] 4s 3d color occurs if you have 3d - 3d no color with 3d or 3d . All of the d orbitals have the same energy.