






|
|
|
Atomic weight
|
Half life
|
|
250
No
|
|
0.25 ms
|
|
251
No
|
251.088870
|
0.8
s
|
|
252
No
|
252.088849
|
2.3
s
|
|
253
No
|
253.090530
|
1.7m
|
|
254m No
254
No
|
- 090953
|
0.28s
55.s
|
|
255
No
|
255.93260
|
3.1m
|
|
256
No
|
256.094252
|
2.9s
|
|
257
No
|
257.096850
|
25.s
|
|
258
No
|
258.098150
|
1.2ms
|
|
259
No
|
259.100931
|
58.m
|
|
262
No
|
|
8.ms
|
|