Lr
Lawrencium-253m
Protons (Z)
103
Neutrons (N)
150
Mass number
253
Half-Life
1.32 s
Abundance
---
Mass
253.095 u
Mass Excess
88,560.0 keV
Spin
(1/2-)
Discovered
1985
Binding energy per nucleon
7,403 keV
Neutron separation energy
8,051 keV
Proton separation energy
1,600 keV
Decay Mode
- SF12%
Decay chain
- LrLawrencium-253Z 103 · N 1501.32 s
- α90%
- α75%
- β⁺51%
- β⁺64.7%
- EC99.88%
- 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%