Element Tantalum (Ta)

Atomic number 73 · transition metal · Atomic mass 180.95 u

Atomic Mass
180.9500 u
Element Properties
Atomic Number 73
Atomic Mass 180.9500 u
Category transition metal / 过渡金属
Group 5
Period 6
Block D
Electron Configuration [Xe] 4f¹⁴ 5d³ 6s²
Electronegativity (Pauling) 1.5
Phase at STP Solid
Density 16.65 g/cm³
Year Discovered 1802

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