Curium
96
Cm
Gruppe
i/t
Periode
7
Blokk
f
Proton
Elektron
Nøytron
96
96
151
Generelle eigenskapar
Atomnummer
96
Atommasse
[247]
Massetal
247
Kategori
Aktinid
Farge
Sølv
Radioaktiv
Ja
Curium is named after Madame Curie and her husband Pierre Curie
Krystallstruktur
Enkel heksagonal
Historie
Curium was discovered by Glenn T. Seaborg, Ralph A. James and Albert Ghiorso in 1944 at the University of California, Berkeley.
It was produced by bombarding plutonium with alpha particles during the Manhattan Project.
Curium metal was produced only in 1951 by reduction of curium fluoride with barium.
It was produced by bombarding plutonium with alpha particles during the Manhattan Project.
Curium metal was produced only in 1951 by reduction of curium fluoride with barium.
Elektron per energinivå
2, 8, 18, 32, 25, 9, 2
Elektronkonfigurasjon
[Rn] 5f7 6d1 7s2
Curium accumulates in the bones, lungs and liver, where it promotes cancer
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
13,51 g/cm3
Smeltepunkt
1613,15 K | 1340 °C | 2444 °F
Kokepunkt
3383,15 K | 3110 °C | 5630 °F
Smeltevarme
i/t kJ/mol
Fordampingsvarme
i/t kJ/mol
Spesifikk varmekapasitet
- J/g·K
Førekomst i jordskorpa
i/t
Førekomst i universet
i/t
CAS-nummer
7440-51-9
PubChem CID-nummer
i/t
Atom eigenskapar
Atomradius
174 pm
Kovalent radius
169 pm
Elektronegativitet
1,3 (Paulings skala)
Ioniseringspotensial
5,9915 eV
Molart volum
18,28 cm3/mol
Termisk konduktivitet
0,1 W/cm·K
Oksidasjonstrinn
3, 4
Bruksområde
Curium is mainly used for scientific research purposes.
Curium is a common starting material for the production of higher transuranic elements and transactinides.
The most practical application of 244Cm is as α-particle source in the alpha particle X-ray spectrometers (APXS).
Curium is a common starting material for the production of higher transuranic elements and transactinides.
The most practical application of 244Cm is as α-particle source in the alpha particle X-ray spectrometers (APXS).
Curium is harmful due to its radioactivity
Isotopar
Stabile isotopar
-Ustabile isotopar
233Cm, 234Cm, 235Cm, 236Cm, 237Cm, 238Cm, 239Cm, 240Cm, 241Cm, 242Cm, 243Cm, 244Cm, 245Cm, 246Cm, 247Cm, 248Cm, 249Cm, 250Cm, 251Cm, 252Cm