Antimony

Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
Lọ sí: atọ́ka, àwárí
Antimony
51Sb
As

Sb

Bi
tinantimonytellurium
Ìhànsójú
silvery lustrous gray
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà antimony, Sb, 51
Ẹ̀ka ẹ́límẹ̀nti metalloid
Ẹgbẹ́, àsìkò, àdìpò 155, p
Ìwúwo átọ́mù 121.760(1)
Ìtòléra ẹ̀lẹ́ktrónì [Kr] 4d10 5s2 5p3
2, 8, 18, 18, 5
Physical properties
Phase solid
Density (near r.t.) 6.697 g·cm−3
Liquid density at m.p. 6.53 g·cm−3
Melting point 903.78 K, 630.63 °C, 1167.13 °F
Boiling point 1860 K, 1587 °C, 2889 °F
Heat of fusion 19.79 kJ·mol−1
Heat of vaporization 193.43 kJ·mol−1
Molar heat capacity 25.23 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 807 876 1011 1219 1491 1858
Atomic properties
Oxidation states 5, 3, -3
Electronegativity 2.05 (Pauling scale)
Ionization energies
(more)
1st: 834 kJ·mol−1
2nd: 1594.9 kJ·mol−1
3rd: 2440 kJ·mol−1
Atomic radius 140 pm
Covalent radius 139±5 pm
Van der Waals radius 206 pm
Miscellanea
Crystal structure rhombohedral
Antimony has a rhombohedral crystal structure
Magnetic ordering diamagnetic[1]
Electrical resistivity (20 °C) 417 nΩ·m
Thermal conductivity 24.4 W·m−1·K−1
Thermal expansion (25 °C) 11 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 3420 m·s−1
Young's modulus 55 GPa
Shear modulus 20 GPa
Bulk modulus 42 GPa
Mohs hardness 3.0
Brinell hardness 294 MPa
CAS registry number 7440-36-0
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù antimony
iso NA half-life DM DE (MeV) DP
121Sb 57.36% 121Sb is stable with 70 neutrons
123Sb 42.64% 123Sb is stable with 72 neutrons
125Sb syn 2.7582 y β 0.767 125Te
· r

Antimony (Látìnì: stibium) is a chemical element with symbol Sb and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient times and were used for cosmetics; metallic antimony was also known, but it was erroneously identified as lead. It was established to be an element around the 17th century.



Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81th edition, CRC press.