›› Physical and chemical properties of Tantalum

Atomic Number:73
Element Symbol:Ta
Element Name:Tantalum
Atomic Weight:180.9479
Group Number:5
Group Name:none
Period Number:6
Block:d-block
Ground State Configuration:[Xe] 4f14 5d3 6s2
Ground State Level:4F3/2
Standard State:Solid
Bond Length:286
Atomic Radius Empirical:145
Atomic Radius Calculated:200
Covalent Radius Empirical:138
Electron Affinity:31
First Ionization Energy:761
Pauling Electronegativity:1.5
Allred Rochow Electronegativity:1.33
Density Of Solid:16650
Molar Volume:10.85
Velocity Of Sound:3400
Youngs Modulus:186
Rigidity Modulus:69
Bulk Modulus:200
Poissons Ratio:0.34
Mineral Hardness:6.5
Brinell Hardness:800
Vickers Hardness:873
Electrical Resistivity:13
Reflectivity:78
Melting Point:3017
Boiling Point:5458
Superconduction Temperature:-268.68
Thermal Conductivity:57
Coefficient Of Linear Expansion:6.3
Enthalpy Of Fusion:36
Enthalpy Of Vaporization:735
Enthalpy Of Atmization:782
Most Common Oxidation Numbers:5
Color:Grey blue
Classification:Metallic
Discovered By:Anders Ekeberg
Discovered At:Sweden
Discovered When:1802
Origin Of Name:From the Greek word Tantalos meaning father of Niobe (Greek mythology, (tantalum is closely related to niobium in the periodic table)

Calculate the molecular weight of Tantalum or molecular weight Ta.

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


››Compounds that contain Tantalum

Tantalum Carbide  TaC
Bismuth(III) Orthotantalate  BiTaO4
Lithium Tantalate  LiTaO3
Lead(II) Tantalate  PbTa2O6
Tantalum(III) Aluminide  TaAl3
Tantalum(III) Bromide  TaBr3
Tantalum(IV) Bromide  TaBr4
Tantalum(V) Bromide  TaBr5
Tantalum(III) Chloride  TaCl3
Tantalum(IV) Chloride  TaCl4
Tantalum(V) Chloride  TaCl5
Tantalum(III) Fluoride  TaF3
Tantalum(V) Fluoride  TaF5
Tantalum(IV) Iodide  TaI4
Tantalum(V) Iodide  TaI5
Tantalum(III) Nitride  TaN
Tantalum(II) Oxide  TaO
Tantalum(IV) Oxide  TaO2
Tantalum(II) Sulfide  TaS
Tantalum(IV) Sulfide  TaS2
Tantalum(IV) Selenide  TaSe2
Tantalum(IV) Silicide  TaSi2
Tantalum(IV) Telluride  TaTe2
Tantalum Hydride  Ta2H
Tantalum(V) Oxide  Ta2O5