Element Hafnium (Hf)

Atomic number 72 · transition metal · Atomic mass 178.49 u

Atomic Mass
178.4900 u
Element Properties
Atomic Number 72
Atomic Mass 178.4900 u
Category transition metal / 过渡金属
Group 4
Period 6
Block D
Electron Configuration [Xe] 4f¹⁴ 5d² 6s²
Electronegativity (Pauling) 1.3
Phase at STP Solid
Density 13.31 g/cm³
Year Discovered 1923

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