Ang nobelyo (Iningles nobelium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga No ug kaiphan nga atomik 102. Ang nobelyo mao ang aktinido.
Quick Facts Nobelium, Panagway ...
| Nobelium |
|---|
102No |
|
|
| Panagway |
| unknown |
| Kinatibuk-ang mga kinaiya |
| Ngalan, simbolo, kaiphan |
nobelium, No, 102 |
| Paglitok |
i [[Help:Pronunciation respelling key|noh-Plantilya:Smallcaps all-ee-əm]]
or [[Help:Pronunciation respelling key|noh-Plantilya:Smallcaps all-lee-əm]] |
| Kategoriyang elemento |
aktinido |
| Group, period, block |
[[group {{{group}}} element|{{{group}}}]], 7, f |
| Gibug-aton sa atomo |
[259] |
| Kontorno sa elektron |
[Rn] 5f14 7s2
2, 8, 18, 32, 32, 8, 2
 Electron shells of nobelium (2, 8, 18, 32, 32, 8, 2) |
| History |
| Pagkadiskobre |
Joint Institute for Nuclear Research (1966) |
| Physical properties |
| Phase |
magahi (predicted)[1] |
| Melting point |
1100 K, 827 °C, 1521 (predicted)[1] °F |
| Atomic properties |
| Oxidation states |
2, 3 |
| Electronegativity |
1.3 (predicted)[2] (Pauling scale) |
| Ionization energies |
1st: 641.6 kJ·mol−1 |
| 2nd: 1254.3 kJ·mol−1 |
| 3rd: 2605.1 kJ·mol−1 |
| Miscellanea |
| CAS registry number |
10028-14-5 |
| Most stable isotopes |
| Main article: Isotopes of nobelium |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
|---|
| 253No |
syn |
1.62 min |
80% α |
8.14, 8.06, 8.04, 8.01 |
249Fm |
| 20% β+ |
|
253Md |
| 254No |
syn |
51 s |
90% α |
|
250Fm |
| 10% β+ |
|
254Md |
| 255No |
syn |
3.1 min |
61% α |
8.12, 8.08, 7.93 |
251Fm |
| 39% β+ |
2.012 |
255Md |
| 257No |
syn |
25 s |
99% α |
8.32, 8.22 |
253Fm |
| 1% β+ |
|
257Md |
| 259No |
syn |
58 min |
75% α |
7.69, 7.61, 7.53.... |
255Fm |
| 25% ε |
|
259Md |
| 10% SF |
|
|
| only isotopes with half-lives over 5 seconds are included here |
|
| · r |
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