Page 55 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)
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IR-3        Elements










                       C O N T E N T S

                       IR-3.1 Names and symbols of atoms
                         IR-3.1.1 Systematic nomenclature and symbols for new elements
                       IR-3.2 Indication  o  f  m  ass, charge and atomic number using  i ndexes (subscripts and
                             superscripts)
                       IR-3.3 Isotopes
                         IR-3.3.1 Isotopes of an element
                         IR-3.3.2 Isotopes of hydrogen
                       IR-3.4 Elements (or elementary substances)
                         IR-3.4.1 Name of an element of indefinite molecular formula  o r  s tructure
                         IR-3.4.2 Allotropes (allotropic modifications) of elements
                         IR-3.4.3 Names of allotropes  o f  d efinite molecular formula
                         IR-3.4.4 Crystalline allotropic  m  odifications of an element
                         IR-3.4.5 Solid amorphous modifications and commonly recognized allotropes of
                                indefinite structure
                       IR-3.5 Elements in the periodic  t able
                       IR-3.6 References



           IR-3.1      N A M  E S  A  N D  S Y M  B O L S  O  F  A  T O M  S

                       The origins of the names of some  c hemical elements,  f or example  a ntimony, are lost in
                       antiquity. Other elements recognized (or discovered) during the past three centuries were
                       named according to various associations of origin, physical or chemical properties, etc., and
                       more recently to commemorate the names of eminent s cientists.
                          In the past, some elements were given  t wo names because two groups claimed to have
                       discovered them. To avoid such confusion it was decided in 1947 that after the existence of a
                       new element had been proved  b eyond reasonable doubt, d iscoverers had the right to suggest
                       a  n ame to IUPAC, but that only the Commission on Nomenclature of Inorganic  C hemistry
                       (CNIC) c ould make a  r ecommendation to the IUPAC Council to make  t he final decision.
                                                   1
                          Under the present procedure, claims of the discovery of a  n  ew element are first
                       investigated by a  j oint IUPAC-IUPAP (International Union of Pure and Applied Physics)
                       committee which then assigns priority. The acknowledged discoverers are then invited  t o
                       suggest a  n  ame to the Division of Inorganic  C  hemistry, which then makes a  f ormal
                       recommendation to the IUPAC Council. It is emphasized that the name f or any new element
                       resulting from the above process, once approved by Council, is not intended  t o  c arry any
                       implication regarding priority of discovery. The same is understood to apply  t o  t he names
                       approved by IUPAC in the past, whatever the prehistory.


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