ASCII PERIODIC TABLE OF THE ELEMENTS
Bi
Relative atomic mass: 208.98040 +- 0.00001
English: Bismuth
French: Bismuth
Croatian: Bizmut
German: Bismut
Italian: Bismuto
Spanish: Bismuto
Atomic number: 83
Group numbers: 15
Period: 6
Standard state (20 oC): solid
Discovery: 1450 Basil Valentine (DE)
Bismuth was discovered by Basil Valentine (DE) in 1450. The origin of the name comes from the German words 'Weisse Masse' meaning 'white mass'; now spelled 'wismut' and 'bisemutum'. It is a hard, brittle, steel-grey metal with a pink tint. It is stable in oxygen and water but dissolves in concentrated nitric acid. Bismuth can be found free in nature and in minerals like bismuthine (Bi2S3) and in bismuth ochre (Bi2O3) Main use is in pharmaceuticals and low melting point alloys used as fuses.
Electronic configuration: [Xe] 4f14 5d10 6s2 6p3
Formal oxidation number: +3 +5
Atomic radius: 154.5 pm
Electronegativities: 1.9
Thermal conductivity: 7.87 W/(m K)
Electrical resistivity (20 oC): 106.8 microOhm cm
Melting point: 271.4 oC
Boiling point: 1564 oC
Heat of fusion: 10.48 kJ/mol
Heat of vaporization: 179.1 kJ/mol
Heat of atomization: 207.36 kJ/mol
82Pb <= 83Bi => 84Po
ASCII Periodic Table of the Elements
__________________________________
30 Oct. 2010
Copyright © 1998-2010 by Eni Generalic.