ASCII PERIODIC TABLE OF THE ELEMENTS
Cm
Relative atomic mass: [247]
English: Curium
French: Curium
Croatian: Kurij
German: Curium
Italian: Curio
Spanish: Curio
Atomic number: 96
Group numbers: 3
Period: 7
Standard state (20 oC): solid
Discovery: 1944 Glenn T. Seaborg, Ralph A. James, Albert Ghiorso (US)
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.
Electronic configuration: [Rn] 5f7 6d1 7s2
Formal oxidation number: +3
Atomic radius: 174 pm
Electronegativities: -
Thermal conductivity: - W/(m K)
Electrical resistivity (20 oC): - microOhm cm
Melting point: 1345 oC
Boiling point: - oC
Heat of fusion: - kJ/mol
Heat of vaporization: - kJ/mol
Heat of atomization: 382 kJ/mol
95Am <= 96Cm => 97Bk
ASCII Periodic Table of the Elements
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6 Jan. 2020
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