Lawrencium
Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
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| Ìfarahàn |
| unknown, probably silvery, white or metallic gray |
| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
lawrencium, Lr, 103 |
| Ìpè |
/ləˈrɛnsiəm/
lə-REN-see-əm |
| Ẹ̀ka apilẹ̀sẹ̀ |
actinide |
| Category notes |
Sometimes considered a transition metal |
| Àdìpọ̀, ìgbà, block |
n/a, 7, d |
| Ìwúwo átọ́mù |
[262] g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Rn] 5f14 7s2 7p1 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 18, 32, 32, 9, 2 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid (presumably) |
| Atomic properties |
| Oxidation states |
3 |
| Ionization energies |
1st: 443.8 kJ·mol−1 |
| 2nd: 1428.0 kJ·mol−1 |
| 3rd: 2219.1 kJ·mol−1 |
| Miscellanea |
| CAS registry number |
22537-19-5 |
| Most stable isotopes |
| Main article: Isotopes of lawrencium |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
| 262Lr |
syn |
3.6 h |
EC |
|
262No |
| 261Lr |
syn |
44 m |
SF/EC? |
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| 260Lr |
syn |
2.7 m |
alpha |
8.04 |
256Md |
| 259Lr |
syn |
6.2 s |
78% alpha |
8.44 |
255Md |
| 22% SF |
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| 258Lr |
syn |
4.1 s |
alpha |
8.68,8.65,8.62,8.59 |
254Md |
| 257Lr |
syn |
0.65 s |
alpha |
8.86,8.80 |
253Md |
| 256Lr |
syn |
27 s |
alpha |
8.62,8.52,8.32... |
252Md |
| 255Lr |
syn |
21.5 s |
alpha |
8.43,8.37 |
251Md |
| 254Lr |
syn |
13 s |
78% alpha |
8.46,8.41 |
250Md |
| 22% EC |
|
254No |
| 253Lrm |
syn |
0.57 s |
alpha |
8.79 |
249Md |
| 253Lrg |
syn |
1.49 s |
92% alpha |
8.72 |
249Md |
| 8% SF |
|
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| 252Lr |
syn |
0.36 s |
alpha |
9.02,8.97 |
248Md |
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