D-block


D-block

The d-block of the periodic table of the elements consists of those periodic table groups that contain elements in which, in the atomic ground state, the highest-energy electron is in a d-orbital. The d-block elements are often also known as "transition metals".

Although Lutetium and Lawrencium are in the d-block, they are not considered transition metals but lanthanide and actinide according to IUPAC. [http://www.iupac.org/reports/provisional/abstract04/connelly_310804.html IUPAC Provisional Recommendations for the Nomenclature of Inorganic Chemistry (2004)] (online draft of an updated version of the "Red Book" IR 3-6)] Group 12 elements are also in the d-block but are considered post-transition metals [ [http://weblearn.ox.ac.uk/site/mathsphys/chem/year3/mt2007/posttrans/resources/lecture%201.pdf "Post Transition Metal Chemistry Lecture 1"] WebLearn - Oxford Campus, Department of Chemistry, public anonymous access, Michaelmas Term 2007, Prof. R.G. Egdell, "Accessed December 2, 2007"] if their d-subshell is completely filled.



ee also

* Electron configuration

References


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