Lr
Lawrencium-257m
Protons (Z)
103
Neutrons (N)
154
Mass number
257
Half-Life
270.0 ms
Abundance
---
Mass
257.1 u
Mass Excess
92,770.0 keV
Spin
(1/2-)
Discovered
2018
Binding energy per nucleon
7,397 keV
Neutron separation energy
7,051 keV
Proton separation energy
2,342 keV
Decay Mode
Decay chain
- LrLawrencium-257Z 103 · N 154270.0 ms
- α
- β⁺~100%
- 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%