›› Physical and chemical properties of Lanthanum

Atomic Number:57
Element Symbol:La
Element Name:Lanthanum
Atomic Weight:138.9055
Group Name:Lanthanoid
Period Number:6 (lanthanoid)
Ground State Configuration:[Xe] 5d 6s2
Ground State Level:2D3/2
Standard State:Solid
Bond Length:373.9
Atomic Radius Empirical:195
Covalent Radius Empirical:169
Electron Affinity:48
First Ionization Energy:538.1
Pauling Electronegativity:1.10
Allred Rochow Electronegativity:1.08
Density Of Solid:6146
Molar Volume:22.39
Velocity Of Sound:2475
Youngs Modulus:37
Rigidity Modulus:14
Bulk Modulus:28
Poissons Ratio:0.28
Mineral Hardness:2.5
Brinell Hardness:363
Vickers Hardness:491
Electrical Resistivity:61
Melting Point:920
Boiling Point:3470
Superconduction Temperature:-267
Thermal Conductivity:13
Coefficient Of Linear Expansion:12.1
Enthalpy Of Fusion:6.2
Enthalpy Of Vaporization:400
Enthalpy Of Atmization:431
Most Common Oxidation Numbers:3
Color:Silvery white
Discovered By:Carl Gustaf Mosander
Discovered At:Sweden
Discovered When:1839
Origin Of Name:From the Greek word lanthanein meaning to lie hidden

Calculate the molecular weight of Lanthanum or molecular weight La.

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

››Compounds that contain Lanthanum

Lanthanum Aluminate  LaAlO3
Lanthanum Boride  LaB6
Lanthanum Bromide  LaBr3
Lanthanum Carbide  LaC2
Lanthanum Chloride  LaCl3
Lanthanum Chloride Trihydrate  LaCl3.3H2O
Lanthanum Chloride Heptahydrate  LaCl3.7H2O
Lanthanum Fluoride  LaF3
Lanthanum Hydride  LaH3
Lanthanum Iodide  LaI3
Lanthanum Nitride  LaN
Lanthanum Niobate  LaNbO4
Lanthanum Silicide  LaSi2
Lanthanum Vanadate  LaVO4
Lanthanum Oxide  La2O3
Lanthanum Sulfide  La2S3