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- Quantum Numbers of Copper
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- Electron Affinity of Sulfur in kcal/mol
No
Nobelium
14 known isotopes (0 stable,
14 radioactive)
248No
Mass
248.086623 u
Abundance —
Half-life 2 microseconds
Spin/Parity —
Decay Mode(s) Unknown
249No
Mass
249.087802 u
Abundance —
Half-life 38.1 milliseconds
Spin/Parity (5/2+)
Decay Mode(s) α (100%), Spontaneous fission (0.23%)
250No
Mass
250.087565 u
Abundance —
Half-life 4.2 microseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%), α (2%)
251No
Mass
251.088942 u
Abundance —
Half-life 0.80 seconds
Spin/Parity (7/2+)
Decay Mode(s) α (91%), Spontaneous fission (0.3%)
252No
Mass
252.088966 u
Abundance —
Half-life 2.46 seconds
Spin/Parity 0+
Decay Mode(s) α (65.3%), Spontaneous fission (33%), EC/β⁺ (1.7%)
253No
Mass
253.090563 u
Abundance —
Half-life 1.62 m
Spin/Parity (9/2-)
Decay Mode(s) α (55%), EC/β⁺ (45%)
254No
Mass
254.090954 u
Abundance —
Half-life 51.2 seconds
Spin/Parity 0+
Decay Mode(s) α (90%), Electron capture (10%), Spontaneous fission (0.17%)
255No
Mass
255.093196 u
Abundance —
Half-life 3.52 m
Spin/Parity (1/2+)
Decay Mode(s) EC/β⁺ (70%), α (30%)
256No
Mass
256.094282 u
Abundance —
Half-life 2.91 seconds
Spin/Parity 0+
Decay Mode(s) α (99.47%), Spontaneous fission (0.53%)
257No
Mass
257.096884 u
Abundance —
Half-life 24.5 seconds
Spin/Parity (3/2+)
Decay Mode(s) α (85%), Electron capture (30%), Spontaneous fission (1.5%)
258No
Mass
258.098205 u
Abundance —
Half-life 1.2 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%)
259No
Mass
259.100998 u
Abundance —
Half-life 58 m
Spin/Parity (9/2+)
Decay Mode(s) α (75%), EC/β⁺ (25%), Spontaneous fission (10%)
260No
Mass
260.102641 u
Abundance —
Half-life 106 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%)
262No
Mass
262.107463 u
Abundance —
Half-life 5 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%)
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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