Curium
96
Cm
Gruppe
I/T
Periode
7
Blokk
f
Protoner
Elektroner
Nøytroner
96
96
151
Generelle egenskaper
Atomnummer
96
Atomvekt
[247]
Massetall
247
Kategori
Aktinoider
Farge
Sølv
Radioaktiv
Ja
Curium is named after Madame Curie and her husband Pierre Curie
Krystallstruktur
Simple Hexagonal
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.
Elektroner 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
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
13,51 g/cm3
Smeltepunkt
1613,15 K | 1340 °C | 2444 °F
Kokepunkt
3383,15 K | 3110 °C | 5630 °F
Smeltevarme
I/T
Fordampningsvarme
I/T
Spesifikk varmekapasitet
-
Forekomst i jordskorpa
I/T
Forekomst i universet
I/T
CAS Number
7440-51-9
PubChem CID Number
I/T
Atomegenskaper
Atomradius
174 pm
Kovalent radius
169 pm
Elektronegativitet
1,3 (Pauling-skalaen)
Ioniseringsenergi
5,9915 eV
Molart volum
18,28 cm3/mol
Termisk ledningsevne
0,1 W/cm·K
Oksidasjonstilstander
3, 4
Bruksområder
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
Isotoper
Stabile isotoper
-Ustabile isotoper
233Cm, 234Cm, 235Cm, 236Cm, 237Cm, 238Cm, 239Cm, 240Cm, 241Cm, 242Cm, 243Cm, 244Cm, 245Cm, 246Cm, 247Cm, 248Cm, 249Cm, 250Cm, 251Cm, 252Cm