Curium

Kemiallinen merkki: Cm
Järjestysluku: 96
Kategoria: aktinoidit
Ryhmä: n/a
Jakso: 7
Lohko: f
Moolimassa: (247) g/mol
Elektronia kuorilla: 2, 8, 18, 32, 25, 9, 2
CAS-numero: 7440-51-9
Olomuoto: kiinteä
Tiheys: 13,51 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 1613 K (1340 °C, 2444 °F)
Kiehumispiste: 3383 K (3110 °C, 5630 °F)
Kiderakenne: hexagonal close-packed
Hapetusluvut: 3
Elektronegatiivisuus: 1,3 (Pauling-asteikko)
Nimen alkuperä: Marie and Pierre Curie
Nimen tarkoitus: the physicists who discovered new elements (not curium though)
Faktoja:
- is a synthetic chemical element
- a radioactive metallic transuranic element
- is produced by bombarding plutonium with alpha particles (helium ions)
- 19 radioisotopes of curium have been characterized, with the most stable being curium-247 with a half-life of 1,56 x 107 years
- the isotope curium-248 has been synthesized only in milligram quantities, but curium-242 and curium-244 are ma
- there are few commercial applications for curium but it may one day be useful in radioisotope thermoelectric generators
- curium bio-accumulates in bone tissue where its radiation destroys bone marrow and thus stops red blood cell creation"
- is silvery-white in color and the element is more electro-positive than aluminium