In detail

Antimony (Sb) properties

Atomic mass, symbol and atomic number

antimony is a naturally occurring element with the element symbol Sb and atomic number 51. In the periodic table it stands with an atomic mass of 121.750 u in the 5th main group. The chemical element is not radioactive and is in a solid state at room temperature.

Characteristics: antimony (English antimony)

Chemical element:antimony
Atomic number:51
Group:nitrogen group
Year of discovery:primeval
Atomic properties
Atomic mass:121,750 u
Atomic radius:145 pm
Covalent radius:139 pm
Van der Waals radius:206 pm
Electron configuration:Kr 4d10 5s2 5p3
ionization:834 kJ / mol
Physical Properties
Physical state:firmly
Density:6.697 g / cm3
Crystal structure:trigonal
molar volume:18,19 · 10-6 m3/ mol
Mohs hardness:3,0
Melting point:630 ° C
Boiling point:1635 ° C
Heat of fusion:19.7 kJ / mol
Heat of vaporization:193 kJ / mol
Thermal conductivity:24W
Chemical properties

Did you know that ...

  • Antimony is part of many metal alloys, making the metal harder?
  • the ancient Egyptians used antimony as kohl?
  • China is responsible for over 90% of the world's antimony production?
  • the name of the element can be derived from the Greek meaning "flower"?