Rf
Rutherfordium-261
Protons (Z)
104
Neutrons (N)
157
Mass number
261
Half-Life
2.1 s
Abundance
---
Mass
261.109 u
Mass Excess
101,320.0 keV
Spin
(3/2+)
Discovered
1970
Binding energy per nucleon
7,371 keV
Neutron separation energy
5,901 keV
Proton separation energy
4,249 keV
Decay Mode
- SF82%
- α→Nobelium-25718%
Decay chain
- RfRutherfordium-261Z 104 · N 1572.1 s
- α18%
- α85%
- EC88%
- α~100%
- β⁻~100%
- α~100%
- α~100%
- β⁻~100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- α100%
- β⁻100%
- α~100%
- α~100%
- α99.992%
- β⁻97.91%
- α100%
- β⁻100%
- α100%