Periodic table

 

 

Atomic number:104

Group numbers:4

Period:7

Electronic configuration:[Rn] 5f¹⁴ 6d² 7s²

Formal oxidation number:+4

Electronegativities:-

Atomic radius / pm:-

Relative atomic mass:[267]

 

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.

PHYSICAL PROPERTIES

Density / g dm^-3:-

Molar volume / cm³mol^-1:-

Electrical resistivity / μΩcm:- (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:-

Melting point / °C:-

Boiling point / °C:-

Heat of fusion / kJ mol^-1:-

Heat of vaporization / kJ mol^-1:-

Heat of atomization / kJ mol^-1:-

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:-

Second ionization energy / kJ mol^-1:-

Third ionization energy / kJ mol^-1:-

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:-

in the oceans / ppm:-

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

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Periodic Table of the Elements

 

Citing this page:

Generalic, Eni. "Rutherfordium." EniG. Periodic Table of the Elements. 3 Jan. 2012. KTF-Split. {Date of access}. <http://www.periodni.com/rf.html>.