Ar
Argon-31
Protons (Z)
18
Neutrons (N)
13
Mass number
31
Half-Life
15.0 ms
Abundance
---
Mass
31.012 u
Mass Excess
11,330.0 keV
Spin
5/2+
Discovered
1986
Binding energy per nucleon
7,252 keV
Neutron separation energy
18,811 keV
Proton separation energy
634 keV
Decay Mode
- β⁺pα<0.38%
- β⁺p0.07%
Decay chain
- ArArgon-31Z 18 · N 1315.0 ms
- β⁺p68.3%
- β⁺100%
- β⁺100%