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Rutherfordium

Chemical element
Rutherfordium is a synthetic chemical element; it has symbol Rf and atomic number 104. It is named after physicist Ernest Rutherford. As a synthetic element, it is not found in nature and can only be made in a particle accelerator. Wikipedia
Symbol: Rf
Atomic number: 104
Electron configuration: Rn 5f14 6d2 7s2
Atomic mass: 267 u
Discovered: 1964
Melting point: 3,812°F (2,100°C)