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Antimony,  51Sb
General properties
Name, seembol antimony, Sb
Appearance sillery lustrous gray
Pronunciation UK /ˈæntməni/ AN-ti-mə-nee;
US /ˈæntmni/ AN-ti-moh-nee
Antimony in the periodic cairt
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline yird metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline yird metal)
Aluminium (post-transeetion metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline yird metal)
Scandium (transeetion metal)
Titanium (transeetion metal)
Vanadium (transeetion metal)
Chromium (transeetion metal)
Manganese (transeetion metal)
Airn (transeetion metal)
Cobalt (transeetion metal)
Nickel (transeetion metal)
Capper (transeetion metal)
Zinc (transeetion metal)
Gallium (post-transeetion metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline yird metal)
Yttrium (transeetion metal)
Zirconium (transeetion metal)
Niobium (transeetion metal)
Molybdenum (transeetion metal)
Technetium (transeetion metal)
Ruthenium (transeetion metal)
Rhodium (transeetion metal)
Palladium (transeetion metal)
Siller (transeetion metal)
Cadmium (transeetion metal)
Indium (post-transeetion metal)
Tin (post-transeetion metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline yird metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transeetion metal)
Tantalum (transeetion metal)
Tungsten (transeetion metal)
Rhenium (transeetion metal)
Osmium (transeetion metal)
Iridium (transeetion metal)
Platinum (transeetion metal)
Gold (transeetion metal)
Mercur (transeetion metal)
Thallium (post-transeetion metal)
Leid (post-transeetion metal)
Bismuth (post-transeetion metal)
Polonium (post-transeetion metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline yird metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transeetion metal)
Dubnium (transeetion metal)
Seaborgium (transeetion metal)
Bohrium (transeetion metal)
Hassium (transeetion metal)
Meitnerium (unkent chemical properties)
Darmstadtium (unkent chemical properties)
Roentgenium (unkent chemical properties)
Copernicium (transeetion metal)
Ununtrium (unkent chemical properties)
Flerovium (post-transeetion metal)
Ununpentium (unkent chemical properties)
Livermorium (unkent chemical properties)
Ununseptium (unkent chemical properties)
Ununoctium (unkent chemical properties)


Atomic nummer (Z) 51
Group, block group 15 (pnictogens), p-block
Period period 5
Element category   metalloid
Staundart atomic wicht (±) (Ar) 121.760(1)
Electron configuration [Kr] 4d10 5s2 5p3
per shell
2, 8, 18, 18, 5
Pheesical properties
Phase solid
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
Creestal structur trigonal
Simple trigonal crystal 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
Diskivery 3000 BC
First isolation Vannoccio Biringuccio (1540)
Maist stable isotopes o antimony
iso NA hauf-life DM DE (MeV) DP
121Sb 57.36% - (SF) <25.718
123Sb 42.64% - (SF) <23.454
125Sb syn 2.7582 y β 0.767 125Te
Decay modes in parentheses are predictit, but hae nae yet been observed
· references

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 mineral 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.