Rutherfordium - ASCII Periodic Table of the Elements

ASCII PERIODIC TABLE OF THE ELEMENTS

  Rf

Relative atomic mass: [267]

English: Rutherfordium
French: Rutherfordium
Croatian: Ruthefordij
German: Rutherfordium
Italian: Rutherfordio
Spanish: Rutherfordio

Atomic number: 104
Group numbers: 4
Period: 7
Standard state (20 °C): solid

Discovery: 1964 Albert Ghiorso & Berkely Lab. (US), Georgy Nikolaevich Flerov & JINR Dubna (RU)

Rutherfordium was discovered by workers at the Nuclear Institute at Dubna (RU) and by workers at the University of California, Berkeley (US) in 1964. Name in honour of Lord 'Rutherford', the physicist and chemist from New Zealand. It is a synthetic radioactive metal. Rutherfordium was made by bombarding californium-249 with beams of carbon-12 and 13. Six isotopes of rutherfordium have so far been identified. Rutherfordium-261, the longest-lived, has a half-life of 62 seconds.

Electronic configuration: [Rn] 5f¹⁴ 6d² 7s²
Formal oxidation number: +4
Atomic radius: - pm

Electronegativities: -
Thermal conductivity: - W/(m K)
Electrical resistivity (20 °C): - μΩcm

Melting point: - °C
Boiling point: - °C

Heat of fusion: - kJ/mol
Heat of vaporization: - kJ/mol
Heat of atomization: - kJ/mol