›› Physical and chemical properties of Arsenic

Atomic Number:33
Element Symbol:As
Element Name:Arsenic
Atomic Weight:74.92160
Group Number:15
Group Name:Pnictogen
Period Number:4
Ground State Configuration:[Ar] 3d10 4s2 4p3
Ground State Level:4So3/2
Standard State:Solid
Common Valences:3,5
Bond Length:249
Atomic Radius Empirical:115
Atomic Radius Calculated:114
Covalent Radius Empirical:119
Vander Waals Radius:185
Electron Affinity:78
First Ionization Energy:947.0
Pauling Electronegativity:2.18
Sanderson Electronegativity:2.82
Allred Rochow Electronegativity:2.20
Mulliken Jaffe Electronegativity:2.26
Allen Electronegativity:2.211
Density Of Solid:5727
Molar Volume:12.95
Youngs Modulus:8
Bulk Modulus:22
Mineral Hardness:3.5
Brinell Hardness:1440
Electrical Resistivity:30
Refractive Index:1.001552
Melting Point:817
Boiling Point:614
Critical Temperature:1427
Thermal Conductivity:50
Enthalpy Of Fusion:27.7
Enthalpy Of Vaporization:32.4 (sublimation)
Enthalpy Of Atmization:302
Most Common Oxidation Numbers:5,3,-3
Color:Metallic grey
Discovered By:Known since ancient times
Discovered At:not known
Origin Of Name:From the Greek word arsenikon meaning yellow orpiment

Calculate the molecular weight of Arsenic or molecular weight As.

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

››Compounds that contain Arsenic

Aluminium Arsenide  AlAs
Arsine  AsH3
Cacodylic Acid  (CH3)2AsO2H
Cadmium Arsenide  Cd3As2
Gallium Arsenide  GaAs
Indium Arsenide  InAs
Arsenic Oxybromide  AsBrO
Arsenic Tribromide  AsBr3
Arsenic Trichloride  AsCl3
Arsenic Oxychloride  AsCl3O
Arsenic Pentachloride  AsCl5
Arsenic Trifluoride  AsF3
Arsenic Pentafluoride  AsF5
Arsenic Diiodide  AsI2
Arsenic Triiodide  AsI3
Arsenic Monoxide  AsO
Arsenic Dioxide  AsO2
Arsenic Monophosphide  AsP
Arsenic Phosphide  AsP3
Arsenic Tetraselenide  AsSe4
Diarsenic Tetrahydride  As2H4
Arsenic Trioxide  As2O3
Arsenic Pentoxide  As2O5
Arsenic Diphosphide  As2P2
Arsenic Trisulfide  As2S3
Arsenic Tetrasulfide  As2S4
Arsenic Pentasulfide  As2S5
Arsenic Hemiselenide  As2Se
Arsenic Triselenide  As2Se3
Arsenic Pentaselenide  As2Se5
Arsenic Tritelluride  As2Te3
Arsenic Tetraoxide  As3O4
Arsenic Triphosphide  AsP3
Tetraarsenic Tetrasulfide  As4S4
Boron Arsenide  BAs
Barium Arsenite  Ba(AsO3)2
Barium Arsenate  Ba(AsO4)2
Calcium Arsenate  Ca3(AsO4)2
Copper(II) Arsenite  CuHAsO3
Copper(II) Arsenate  Cu3(AsO4)2
Iron(III) Arsenic  FeAs
Lithium Arsenate  Li3AsO4
Magnesium Arsenate  Mg3(AsO4)2
Sodium Arsenite  NaAsO2
Nickel(II) Arsenide  NiAs
Lead(II) Arsenite  Pb(AsO4)2
Lead(II) Arsenate  Pb3(AsO4)2
Yttrium(III) Arsenide  YAs
Zinc Arsenite  Zn(AsO2)2
Zinc Arsenide  Zn3As2
Zinc Arsenate  Zn3(AsO4)2
Sodium Arsenate  Na3AsO4