›› Physical and chemical properties of Boron

Atomic Number:5
Element Symbol:B
Element Name:Boron
Atomic Weight:10.811
Group Number:13
Group Name:none
Period Number:2
Ground State Configuration:1s2 2s2 2p
Ground State Level:2Po1/2
Standard State:Solid
Common Valences:3
Bond Length:158.9
Atomic Radius Empirical:85
Atomic Radius Calculated:87
Covalent Radius Empirical:82
Electron Affinity:26.7
First Ionization Energy:800.6
Pauling Electronegativity:2.04
Sanderson Electronegativity:2.28
Allred Rochow Electronegativity:2.01
Mulliken Jaffe Electronegativity:2.04
Allen Electronegativity:2.051
Density Of Solid:2460
Molar Volume:4.39
Velocity Of Sound:16200
Bulk Modulus:320
Mineral Hardness:9.3
Vickers Hardness:49000
Electrical Resistivity:> 10**12
Melting Point:2076
Boiling Point:3927
Thermal Conductivity:27
Coefficient Of Linear Expansion:6
Enthalpy Of Fusion:50
Enthalpy Of Vaporization:507
Enthalpy Of Atmization:563
Most Common Oxidation Numbers:3
Discovered By:Sir Humphrey Davy, Joseph-Louis Gay-Lussac, L.J. Thenard
Discovered At:England, France
Discovered When:1808
Origin Of Name:From the Arabic word buraq and the Persian word burah

Calculate the molecular weight of Boron or molecular weight B.

Also see the full list of chemical elements and atomic weights.

››Compounds that contain Boron

Boric Acid  H3BO3
Boron Carbide  B4C
Boron Nitride  BN
Diboron Trioxide  B2O3
Boron Suboxide  B6O
Boron Trichloride  BCl3
Boron Trifluoride  BF3
Diborane  B2H6
Sodium Borohydride  NaBH4
Titanium Boride  TiB2
Aluminium Diboride  AlB2
Boron Arsenide  BAs
Boron Tribromide  BBr3
Boron Triiodide  BI3
Boron Monophosphide  BP
Boron Orthophosphate  BPO4
Diboron Tetrachloride  B2Cl4
Diboron Tetrafluoride  B2F4
Diboron Trisulfide  B2S3
Boron Decahydride  B4H10
Barium Boride  BaB6
Beryllium Borohydride  Be(BH4)2
Beryllium Boride  BeB2
Calcium Boride  CaB6
Cesium Metaborate  CsBO2
Copper(II) Tetrafluoroborate  Cu(BF4)2
Copper(II) Borate  Cu(BO2)2
Dysprosium(II) Boride  DyB4
Erbium(III) Boride  ErB4
Hafnium Boride  HfB2
Potassium Fluoroborate  KBF4
Potassium Borohydride  KH4B
Lanthanum Boride  LaB6
Lithium Tetrafluoroborate  LiBF4
Lithium Borohydride  LiBH4
Lithium Metaborate  LiBO2
Lithium Borate  Li2B4O7
Lutetium Boride  LuB4
Sodium Tetraphenylborate  NaB(C6H5)4
Sodium Borofluoride  NaBF4
Sodium Cyanoborohydride  NaBH3CN
Nickel(II) Fluoborate  Ni(BF4)2
Nickel(III) Boride  Ni2B
Nickel(II) Boride  Ni3B
Lead(II) Fluoroborate  Pb(BF4)2
Silicon Boride  SiB4
Tin(II) Fluoroborate  Sn(BF4)2
Strontium Metaborate  SrB2O4
Strontium Boride  SrB6
Yttrium(III) Boride  YB6
Zinc Borate  Zn3(BO3)2
Borax  Na2B4O7.10H2O
Decaborane  B10H14