Relative atomic mass: 121.760 +- 0.001

English: Antimony
French: Antimoine
Croatian: Antimon
German: Antimon
Italian: Antimonio
Spanish: Antimonio

Atomic number: 51
Group numbers: 15
Period: 5
Standard state (20 oC): solid

Discovery: - -
Antimony has been known since ancient times. The origin of the name comes from the Latin word stibium meaning mineral stibnite. It is a hard, brittle, silvery-white semimetal that is stable in dry air. It is toxic by ingestion or inhalation. Antimony is found in stibnite (Sb2S3) and in valentinite (Sb2O3). It is alloyed with other metals to increase their hardness. It is used in the manufacture of a few special types of semiconductor devices, also in plastics and chemicals. A few kinds of over-the-counter cold and flu remedies use antimony compounds. The price of 99.9 % pure antimony ingot is 153.50 for 450 g.
Electronic configuration: [Kr] 4d10 5s2 5p3
Formal oxidation number: -3 +3 +5
Atomic radius: 145 pm

Electronegativities: 2.05
Thermal conductivity: 24.3 W/(m K)
Electrical resistivity (20 oC): 39 microOhm cm

Melting point: 630.63 oC
Boiling point: 1587 oC

Heat of fusion: 20.9 kJ/mol
Heat of vaporization: 165.8 kJ/mol
Heat of atomization: 262.04 kJ/mol

50Sn <= 51Sb => 52Te

ASCII Periodic Table of the Elements
29 Aug. 2017
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