Lr
Lawrencium-255m
Protons (Z)
103
Neutrons (N)
152
Mass number
255
Half-Life
2.54 s
Abundance
---
Mass
255.097 u
Mass Excess
89,988.0 keV
Spin
(7/2-)
Discovered
2006
Binding energy per nucleon
7,402 keV
Neutron separation energy
7,733 keV
Proton separation energy
2,024 keV
Decay Mode
Decay chain
- LrLawrencium-255Z 103 · N 1522.54 s
- α40%
- α10%
- β⁺93%
- EC99.965%
- α100%
- α~100%
- β⁻100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%