Ang kuryo o curyo (Iningles curium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Cm ug kaiphan nga atomik 96. Ang kuryo mao ang aktinido.
Quick facts Curium, Panagway ...
| Curium |
|---|
96Cm |
|
|
| Panagway |
silvery
Payl:Curium.jpg |
| Kinatibuk-ang mga kinaiya |
| Ngalan, simbolo, kaiphan |
curium, Cm, 96 |
| Paglitok |
[[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ee-əm]] |
| Kategoriyang elemento |
aktinido |
| Group, period, block |
[[group {{{group}}} element|{{{group}}}]], 7, f |
| Gibug-aton sa atomo |
(247) |
| Kontorno sa elektron |
[Rn] 5f7 6d1 7s2
2, 8, 18, 32, 25, 9, 2
 Electron shells of curium (2, 8, 18, 32, 25, 9, 2) |
| History |
| Pagkadiskobre |
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso (1944) |
| Physical properties |
| Phase |
magahi |
| Density (near r.t.) |
13.51 g·cm−3 |
| Melting point |
1613 K, 1340 °C, 2444 °F |
| Boiling point |
3383 K, 3110 °C, 5630 °F |
| Heat of fusion |
? 15 kJ·mol−1 |
| Vapor pressure |
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K) |
1788 |
1982 |
|
|
|
|
|
| Atomic properties |
| Oxidation states |
4, 3 (amphoteric oxide) |
| Electronegativity |
1.3 (Pauling scale) |
| Ionization energies |
1st: 581 kJ·mol−1 |
| Atomic radius |
174 pm |
| Covalent radius |
169±3 pm |
| Miscellanea |
| Crystal structure |
hexagonal close-packed
|
| Magnetic ordering |
antiferromagnetic→paramagnetic transition at 52 K[1] |
| Electrical resistivity |
1.25[1] µΩ·m |
| CAS registry number |
7440-51-9 |
| Most stable isotopes |
| Main article: Isotopes of curium |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
|---|
| 242Cm |
trace |
160 d |
SF |
- |
- |
| α |
6.1 |
238Pu |
| 243Cm |
trace |
29.1 y |
α |
6.169 |
239Pu |
| ε |
0.009 |
243Am |
| SF |
- |
- |
| 244Cm |
trace |
18.1 y |
SF |
- |
- |
| α |
5.8048 |
240Pu |
| 245Cm |
trace |
8500 y |
SF |
- |
- |
| α |
5.623 |
241Pu |
| 246Cm |
trace |
4730 y |
α |
5.475 |
242Pu |
| SF |
- |
- |
| 247Cm |
trace |
1.56×107 y |
α |
5.353 |
243Pu |
| 248Cm |
trace |
3.40×105 y |
α |
5.162 |
244Pu |
| SF |
- |
- |
| 250Cm |
syn |
9000 y |
SF |
- |
- |
| α |
5.169 |
246Pu |
| β− |
0.037 |
250Bk |
|
| · r |
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