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- Meitnerium
- Electron Affinity of Selenium
- Ar (Symbol of Argon)
- 18 (Atomic Number of Argon)
- Neel Point of Neptunium in °C
Sg
Seaborgium
12 known isotopes (0 stable,
12 radioactive)
258Sg
Mass
258.113040 u
Abundance —
Half-life 2.5 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (90%), α (20%)
259Sg
Mass
259.114353 u
Abundance —
Half-life 0.29 seconds
Spin/Parity —
Decay Mode(s) α (90%), Spontaneous fission (20%), Electron capture (13%)
260Sg
Mass
260.114383 u
Abundance —
Half-life 3.6 milliseconds
Spin/Parity 0+
Decay Mode(s) α (50%), Spontaneous fission (50%)
261Sg
Mass
261.115948 u
Abundance —
Half-life 0.23 seconds
Spin/Parity —
Decay Mode(s) α (100%), Spontaneous fission (1%)
262Sg
Mass
262.116339 u
Abundance —
Half-life 6.9 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (78%), α (22%)
263Sg
Mass
263.118299 u
Abundance —
Half-life 1.0 seconds
Spin/Parity —
Decay Mode(s) α (70%), Spontaneous fission (30%)
264Sg
Mass
264.118930 u
Abundance —
Half-life 37 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%), α (36%)
265Sg
Mass
265.121089 u
Abundance —
Half-life 14.4 seconds
Spin/Parity —
Decay Mode(s) Spontaneous fission (50%), α (50%)
266Sg
Mass
266.121973 u
Abundance —
Half-life 0.34 seconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%), α (18%)
267Sg
Mass
267.124323 u
Abundance —
Half-life 84 seconds
Spin/Parity —
Decay Mode(s) Spontaneous fission (83%), α (17%)
269Sg
Mass
269.128495 u
Abundance —
Half-life 1.3E2 seconds
Spin/Parity —
Decay Mode(s) α (100%), Spontaneous fission (15%)
271Sg
Mass
271.133782 u
Abundance —
Half-life 96 seconds
Spin/Parity —
Decay Mode(s) α (50%), Spontaneous fission (50%)
Decay mode abbreviations:
β⁻ = Beta minus decay, β⁺ = Beta plus decay, EC = Electron capture, α = Alpha decay
n = Neutron emission, p = Proton emission, SF = Spontaneous fission, IT = Isomeric transition
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