|Isotope||Atomic mass (Da)||Isotopic abundance (amount fraction)|
|45Sc ||44.955 908(5)||1|
Scandium is a monoisotopic element and its atomic weight is determined solely by its isotope 45Sc.
The Commission last revised the standard atomic weight of scandium in 2013 based on the latest Atomic Mass Evaluation by IUPAP.
SOURCE Atomic weights of the elements: Review 2000 by John R de Laeter et al. Pure Appl. Chem. 2003 (75) 683-800
© IUPAC 2003
Ar(Sc) = 44.955 908(5) since 2013
The name derives from the Latin scandia for Scandinavia, where the mineral was found. It was discovered
by the Swedish chemist Lars-Fredrik Nilson in 1879 in an ytterbium sample. In the same year,
the Swedish chemist Per Theodore Cleve proved that scandium was Mendeleev's predicted "eka-boron".