Periodic table of the elements
HafniumTantalumTungsten
73
Ta
Tantalum
180.94788		2
8
18
32
11
2
73
Ta
Tantalum
180.94788		2
8
18
32
11
2
General
NameTantalum
SymbolTa
Number73
Chemical seriesTransition elements
Group / Period5 / 6
Blockd-block
CAS registry number7440-25-7

Physical properties
Statesolid
Density16.69 g/cm3
Melting point3290 K (3017 °C, 5463 °F)
Boiling point5731 K (5458 °C, 9856 °F)
Critical point

Atomic properties
Atomic Weight180.94788 g/mol
Crystal structurecubic body centered
Electronegativity1.50
Atomic radius145 pm
Atomic radius (calculated)200 pm
Electron configuration[Xe] 4f14 5d3 6s2
Electrons per shell2, 8, 18, 32, 11, 2
Number of protons73
Number of neutrons108

Other languages
SpanishTántalo
PortugueseTântalo
FrenchTantale
GermanTantal
ItalianTantalio
RussianТантал
PolishTantal
Chinese钽
Arabicتانتالوم
TurkishTantal
DutchTantalium


Periodic table of the elements
HafniumTantalumTungsten