Curiu
96
Cm
Grupă
n/a
Perioadă
7
Bloc
f
Protoni
Electroni
Neutroni
96
96
151
Proprietăți Generale
Număr atomic
96
Masă atomică
[247]
Numar de masa
247
Categorie
Actinide
Culoare
Argint
Radioactive
Da
Curium este numit după Madame Curie și soțul ei Pierre Curie
Structură cristalină
Sistemul Hexagonal
Istoric
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.
Electroni pe nivelul de energie
2, 8, 18, 32, 25, 9, 2
Configurație electronică
[Rn] 5f7 6d1 7s2
Curium accumulates in the bones, lungs and liver, where it promotes cancer
Proprietăți Fizice
Fază
Solid
Densitate
13,51 g/cm3
Punct de topire
1613,15 K | 1340 °C | 2444 °F
Punct de fierbere
3383,15 K | 3110 °C | 5630 °F
Energie de fuziune
n/a
Energie de evaporare
n/a
Căldură specifică
-
Abundența în scoarța Pământului
n/a
Abundența în Univers
n/a
Numarul CAS
7440-51-9
Număr CID PubChem
n/a
Proprietăți Atomice
Rază atomică
174 pm
Rază de covalență
169 pm
Electronegativitate
1,3 (Scara lui Pauling)
Potențial de ionizare
5,9915 eV
Volum molar
18,28 cm3/mol
Conductivitate termică
0,1 W/cm·K
Număr de oxidare
3, 4
Aplicații
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
Izotopi
Izotopi stabili
-Izotopi instabili
233Cm, 234Cm, 235Cm, 236Cm, 237Cm, 238Cm, 239Cm, 240Cm, 241Cm, 242Cm, 243Cm, 244Cm, 245Cm, 246Cm, 247Cm, 248Cm, 249Cm, 250Cm, 251Cm, 252Cm