Кириум

96
Cm
Група
Нема одговор
Периода
7
блок
f
Protons
Electrons
Neutrons
96
96
151
Општи Својства
Атомски број
96
Атомска тежина
[247]
Mass Number
247
Category
Актиноид
Color
Silver
Radioactive
Да
Curium is named after Madame Curie and her husband Pierre Curie
Кристална структура
Simple Hexagonal
History
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.
Electrons per shell
2, 8, 18, 32, 25, 9, 2
Електронска конфигурација
[Rn] 5f7 6d1 7s2
Cm
Curium accumulates in the bones, lungs and liver, where it promotes cancer
Физички Својства
Фаза
Solid
Густина
13,51 g/cm3
Точка на топење
1613,15 K | 1340 °C | 2444 °F
Точка на вриење
3383,15 K | 3110 °C | 5630 °F
Топлина на топење
Нема одговор
Топлина на испарување
Нема одговор
Specific Heat Capacity
-
Abundance in Earth's crust
Нема одговор
Abundance in Universe
Нема одговор
Illustration
Кредити на слика: Images-of-elements
Illustration of curium
CAS Number
7440-51-9
PubChem CID Number
Нема одговор
Атомски Својства
Атомски полупречник
174 pm
Ковалентен полупречник
169 pm
Електронегативност
1,3 (Полингова скала)
Ionization Potential
5,9915 eV
Atomic Volume
18,28 cm3/mol
Thermal Conductivity
0,1 W/cm·K
Oxidation States
3, 4
Applications
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 harmful due to its radioactivity
Isotopes
Stable Isotopes
-
Unstable Isotopes
233Cm, 234Cm, 235Cm, 236Cm, 237Cm, 238Cm, 239Cm, 240Cm, 241Cm, 242Cm, 243Cm, 244Cm, 245Cm, 246Cm, 247Cm, 248Cm, 249Cm, 250Cm, 251Cm, 252Cm