73 Ta 180.947882

Tantalum

TRANSITION METAL

Phase: Solid

Discovered: Anders Gustaf Ekeberg

Block: D

Summary

Tantalum is a chemical element with symbol Ta and atomic number 73. Previously known as tantalium, its name comes from Tantalus, an antihero from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.

Appearance: gray blue

Source: Wikipedia

Physical Properties

Atomic Mass 180.947882 u

Density 16.69 g/cm³

Melting Point 3290 K

Boiling Point 5731 K

Molar Heat 25.36 J/(mol·K)

Electron Affinity 31 kJ/mol

Ionization Energies

1^st: 761 kJ/mol

2^nd: 1500 kJ/mol