Periodic table

 

 

Atomic number:96

Group numbers:3

Period:7

Electronic configuration:[Rn] 5f⁷ 6d¹ 7s²

Formal oxidation number:+3

Electronegativities:-

Atomic radius / pm:174

Relative atomic mass:[247]

 

Curium was discovered by Glenn T. Seaborg, Ralph A. James, and Albert Ghiorso (US) in 1944. Named in honour of Pierre and Marie Curie. It is a silvery, malleable, synthetic radioactive metal. So radioactive it glows in the dark. Curium was made by bombarding plutonium with helium ions.

PHYSICAL PROPERTIES

Density / g dm^-3:13300 (calc.)

Molar volume / cm³mol^-1:18.57 (calc.)

Electrical resistivity / μΩcm:- (20 °C)

THERMAL PROPERTIES

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

Melting point / °C:1345

Boiling point / °C:-

Heat of fusion / kJ mol^-1:-

Heat of vaporization / kJ mol^-1:-

Heat of atomization / kJ mol^-1:382

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:580.85

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. "Curium." EniG. Periodic Table of the Elements. 16 May 2013. KTF-Split. {Date of access}. <http://www.periodni.com/cm.html>.