KidzSearch Image Safe Search   



Antimony,  51Sb
Template:Infobox element/symbol-to-top-image/alt
General properties
Pronunciation
Appearancesilvery lustrous gray
Standard atomic weight (Ar, standard)121.760(1)
Antimony in the periodic table
HydrogenHelium
LithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeon
SodiumMagnesiumAluminiumSiliconPhosphorusSulfurChlorineArgon
PotassiumCalciumScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincGalliumGermaniumArsenicSeleniumBromineKrypton
RubidiumStrontiumYttriumZirconiumNiobiumMolybdenumTechnetiumRutheniumRhodiumPalladiumSilverCadmiumIndiumTinAntimonyTelluriumIodineXenon
CaesiumBariumLanthanumCeriumPraseodymiumNeodymiumPromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumHafniumTantalumTungstenRheniumOsmiumIridiumPlatinumGoldMercury (element)ThalliumLeadBismuthPoloniumAstatineRadon
FranciumRadiumActiniumThoriumProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumRutherfordiumDubniumSeaborgiumBohriumHassiumMeitneriumDarmstadtiumRoentgeniumCoperniciumNihoniumFleroviumMoscoviumLivermoriumTennessineOganesson
As

Sb

Bi
tinantimonytellurium
Atomic number (Z)51
Groupgroup 15 (pnictogens)
Periodperiod 5
Blockp-block
Element category  metalloid
Electron configuration[Kr] 4d10 5s2 5p3
Electrons per shell
2, 8, 18, 18, 5
Physical properties
Phase at STPSb: Solid
Melting point903.78 K ​(630.63 °C, ​1167.13 °F)
Boiling point1908 K ​(1635 °C, ​2975 °F)
Density (near r.t.)6.697 g/cm3
when liquid (at m.p.)6.53 g/cm3
Heat of fusion19.79 kJ/mol
Heat of vaporization193.43 kJ/mol
Molar heat capacity25.23 J/(mol·K)
Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)8078761011121914911858
Atomic properties
Oxidation states−3, −2, −1, +1, +2, +3, +4, +5 (an amphoteric oxide)
ElectronegativityPauling scale: 2.05
Ionization energies
  • 1st: 834 kJ/mol
  • 2nd: 1594.9 kJ/mol
  • 3rd: 2440 kJ/mol
  • (more)
Atomic radiusempirical: 140 pm
Covalent radius139±5 pm
Van der Waals radius206 pm
Color lines in a spectral range
Spectral lines of antimony
Other properties
Natural occurrenceSb: Primordial
Crystal structurerhombohedral
Rhombohedral crystal structure for antimony
Speed of sound thin rod3420 m/s (at 20 °C)
Thermal expansion11 µm/(m·K) (at 25 °C)
Thermal conductivity24.4 W/(m·K)
Electrical resistivity417 nΩ·m (at 20 °C)
Magnetic orderingdiamagnetic
Magnetic susceptibility−99.0·10−6 cm3/mol
Young's modulus55 GPa
Shear modulus20 GPa
Bulk modulus42 GPa
Mohs hardness3.0
Brinell hardness294–384 MPa
CAS Number7440-36-0
History
DiscoveryArabic alchemists (before AD 815)
Main isotopes of antimony
Iso­topeAbun­danceHalf-life (1/2)Decay modePro­duct
121Sb57.21%stable
123Sb42.79%stable
125Sbsyn2.7582 yβ125Te
| references
Antimony crystal

Antimony is a chemical element. It has the chemical symbol Sb. The symbol Sb is from the Latin name of 'stibium' for the element. It has the atomic number 51. Its atomic mass is 121.8. It is a blue-gray element that is somewhat toxic.

 view more...






Not Finding Your Answer?
Post It On KidzTalk Homework Help


   Report a search problem







COMPANY RESOURCES LINKS SOCIAL
contact us education daily journal home facebook
about us make us your default search kidztalk twitter  
terms/privacy blocking websites kidznet pinterest  
advertise teacher zone wiki    
media link to us learning sites    
business / api solutions add a site image search    
affiliate program kidzsearch apps kidztube    
play youtube on kidzsearch games    
  voice search music    
  report a problem cool facts    
  settings news    
    search help    
       
         










 mobile version

      Copyright 2005-2024 KidzSearch.com