Home 51 Sb Antimony back to the periodic table
 
Atomic number   51
Symbol   Sb
Atomic weight   121.75
Density [g/cm3]   6.69
Melting point [°C]   630.7
Boiling point [°C]   1750
1st Ionization energy [eV]   8.641
Electronic configuration   [Kr] 4d10 5s2 5p3
Oxidation number (most stable)   5, 3, 3-
Atomic radius [pm]   145
Ionic radius [pm]   76 (3+)
Abundance in crustal rocks [ppm]   0.2
Origin of the name   (greek) anti monos = not alone, symbol from (lat.) stibium = mark
Discovery   known since ancient times
Uses   for the increase of the hardness in lead and tin alloys as well as for doping in the semiconductor technology.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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