Antimony

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Antimony,  51Sb
Antimony-4.jpg
General properties
Appearance sillery lustrous gray
Staundart atomic wecht (Ar, staundart) 121.760(1)
Antimony in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
As

Sb

Bi
tinantimonytellurium
Atomic nummer (Z) 51
Group group 15 (pnictogens)
Period period 5
Element category   metalloid
Block p-block
Electron confeeguration [Kr] 4d10 5s2 5p3
Electrons per shell
2, 8, 18, 18, 5
Pheesical properties
Phase (at STP) solit
Meltin pynt 903.78 K ​(630.63 °C, ​1167.13 °F)
Bylin pynt 1860 K ​(1587 °C, ​2889 °F)
Density (near r.t.) 6.697 g/cm3
when liquid (at m.p.) 6.53 g/cm3
Heat o fusion 19.79 kJ/mol
Heat o vapourisation 193.43 kJ/mol
Molar heat capacity 25.23 J/(mol·K)
Vapour pressur
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 Pauling scale: 2.05
Ionisation energies
Atomic radius empirical: 140 pm
Covalent radius 139±5 pm
Van der Waals radius 206 pm
Color lines in a spectral range
Miscellanea
Creestal structurtrigonal
Simple trigonal creestal structur for antimony
Speed o soond thin rod 3420 m/s (at 20 °C)
Thermal expansion 11 µm/(m·K) (at 25 °C)
Thermal conductivity 24.4 W/(m·K)
Electrical resistivity 417 n Ω·m (at 20 °C)
Magnetic orderin diamagnetic[1]
Young's modulus 55 GPa
Shear modulus 20 GPa
Bouk modulus 42 GPa
Mohs haurdness 3.0
Brinell haurdness 294 MPa
CAS Nummer 7440-36-0
History
Diskivery 3000 BC
First isolation Vannoccio Biringuccio (1540)
Main isotopes o antimony
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
121Sb 57.36% - (SF)
123Sb 42.64% - (SF)
125Sb syn 2.7582 y β 125Te
Decay modes in parentheses are predictit, but hae nae yet been observed
| references | in Wikidata

Antimony is a chemical element wi seembol Sb (frae Laitin: stibium) an atomic nummer 51. A lustrous gray metalloid, it is foond in naitur mainly as the sulfide meeneral stibnite (Sb2S3). Antimony compoonds hae been kent syne auncient times an wur uised for cosmetics; metallic antimony wis an aa kent, but it wis erroneously identified as leid. It wis established tae be an element aroond the 17t century.

References[eedit | eedit soorce]

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