Element Rutherfordium (Rf)

Atomic number 104 · transition metal · Atomic mass 267 u

Atomic Mass
267.0000 u
Element Properties
Atomic Number 104
Atomic Mass 267.0000 u
Category transition metal / 过渡金属
Group 4
Period 7
Block D
Electron Configuration [Rn] 5f¹⁴ 6d² 7s²
Electronegativity (Pauling)
Phase at STP Solid
Density 23.2 g/cm³
Year Discovered 1964

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