Bismuto

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Bismuth
83Bi
Sb

Bi

Uup
leadbismuthpolonium
Appearance
lustrous silver
General properties
Name, simbolo, kaiphan bismuth, Bi, 83
Pronunciation Plantilya:IPAc-en Plantilya:Respell
Element category post-transition metal
Group, period, block 156, p
Standard atomic weight 208.98040(1)
Electron configuration [Xe] 4f14 5d10 6s2 6p3
2, 8, 18, 32, 18, 5
Electron shells of bismuth (2, 8, 18, 32, 18, 5)
History
Discovery Claude François Geoffroy (1753)
Physical properties
Phase magahi
Density (near r.t.) 9.78 g·cm−3
Liquid density at m.p. 10.05 g·cm−3
Melting point 544.7 K, 271.5 °C, 520.7 °F
Boiling point 1837 K, 1564 °C, 2847 °F
Heat of fusion 11.30 kJ·mol−1
Heat of vaporization 151 kJ·mol−1
Molar heat capacity 25.52 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 941 1041 1165 1325 1538 1835
Atomic properties
Oxidation states 5, 4, 3, 2, 1
(mildly acidic oxide)
Electronegativity 2.02 (Pauling scale)
Ionization energies
(more)
1st: 703 kJ·mol−1
2nd: 1610 kJ·mol−1
3rd: 2466 kJ·mol−1
Atomic radius 156 pm
Covalent radius 148±4 pm
Van der Waals radius 207 pm
Miscellanea
Crystal structure rhombohedral[1]
Bismuth has a rhombohedral crystal structure
Magnetic ordering diamagnetic
Electrical resistivity (20 °C) 1.29 µΩ·m
Thermal conductivity 7.97 W·m−1·K−1
Thermal expansion (25 °C) 13.4 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 1790 m·s−1
Young's modulus 32 GPa
Shear modulus 12 GPa
Bulk modulus 31 GPa
Poisson ratio 0.33
Mohs hardness 2.25
Brinell hardness 94.2 MPa
CAS registry number 7440-69-9
Most stable isotopes
Main article: Isotopes of bismuth
iso NA half-life DM DE (MeV) DP
207Bi syn 31.55 y β+ 2.399 207Pb
208Bi syn 3.68×105 y β+ 2.880 208Pb
209Bi 100% 1.9×1019 y α 3.137 205Tl
210Bi trace 5.012 d β 1.426 210Po
α 5.982 206Tl
210mBi syn 3.04×106 y IT 0.271 210Bi
α 6.253 206Tl
t  h  u
· r

Ang bismuto (Iningles bismuth) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Bi ug kaiphan nga atomik 83. Ang bismuto mao ang puthaw.

Ang mga gi basihan niini[usba | edit source]

  1. Cucka, P.; Barrett, C. S. (1962). "The crystal structure of Bi and of solid solutions of Pb, Sn, Sb and Te in Bi". Acta Crystallographica 15 (9): 865. doi:10.1107/S0365110X62002297. 


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