Tantalum

Atomic Number: 73

Name: Tantalum

Symbol: Ta

Atomic Weight: 180.9479

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d³6s²

Ionization energies: 761 kJ/mol

Pauling electronegativity: 1.5

Melting Point: 2996^oC

Boiling Point: 5425^oC

Ionic radius: 0.68 angstroms (+5)