Db
Dubnium-255m
Protons (Z)
105
Neutrons (N)
150
Mass number
255
Half-Life
2.8 ms
Abundance
---
Mass
255.107 u
Mass Excess
99,700.0 keV
Spin
(1/2-)
Discovered
1976
Binding energy per nucleon
7,358 keV
Neutron separation energy
---
Proton separation energy
789 keV
Decay Mode
- SF100%
- α→Lawrencium-251
Decay chain
- DbDubnium-255Z 105 · N 1502.8 ms
- α
- β⁺
- α83%
- α64%
- β⁺86%
- β⁺~100%
- α~100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%