102-No-257

• Atomic Mass: 257.0968528 ± 0.0000331 amu
• Excess Mass: 90217.768 ± 30.873 keV
• Binding Energy: 1904312.147 ± 30.874 keV
• Beta Decay Energy: B- -2564.000 ± 210.000 keV

• Spin: (7/2+)
• Half life: 25 S ( 8.0000 % )
• Mode of decay: Alpha to Fm-253
  • Branch ratio: ~ 100.00
  • Decay energy: 8.450 MeV

• Possible parent nuclides:

  Alpha from Rf-261

Element No