Lr
Lawrencium-254m
Protons (Z)
103
Neutrons (N)
151
Mass number
254
Half-Life
20.3 s
Abundance
---
Mass
254.096 u
Mass Excess
89,750.0 keV
Spin
(1+)
Discovered
2019
Binding energy per nucleon
7,401 keV
Neutron separation energy
6,841 keV
Proton separation energy
1,898 keV
Decay Mode
Decay chain
- LrLawrencium-254Z 103 · N 15120.3 s
- α
- β⁺92.974%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α100%
- α99.98%
- β⁻100%
- β⁻99.976%
- α100%
- β⁻~100%
- β⁻~100%
- α100%