Atomic mass, symbol and atomic number
Curium is an artificially created element with the element symbol Cm and atomic number 96. In the periodic table it belongs to the actinoids with an atomic mass of 247.07 u. The chemical element discovered by Glenn T. Seaborg in 1944 is radioactive and is in a solid state of aggregation at room temperature.
Characteristics: Curium (English Curium)
|explorers:||Glenn T. Seaborg|
|Year of discovery:||1944|
|Atomic mass:||247.07 u|
|Atomic radius:||174 pm|
|Covalent radius:||170 pm|
|Van der Waals radius:||???|
|Electron configuration:||Rn 5f7 6d1 7s2|
|ionization:||581 kJ / mol|
|Density:||13.51 g / cm3|
|molar volume:||18,05 · 10-6 m3/ mol|
|Melting point:||1340 ° C|
|Boiling point:||3110 ° C|
|Heat of fusion:||unknown|
|Heat of vaporization:||unknown|
Did you know that ...
- Curium was named after the couple Marie and Pierre Curie, but had nothing to do with the discovery of the element itself?
- the discoverer of the element, Glenn T. Seaborg, was still involved in the discovery of nine other elements during his lifetime?
- the longest-lived isotope of curium has a half-life of more than 15 million years?
- Curium is formed in the fission of other radioactive elements in nuclear reactors?