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- Zirconium
- Boiling Point of Chromium
- Pr (Symbol of Praseodymium)
- 115 (Atomic Number of Moscovium)
- Lifetime of Americium in day
Rf
Rutherfordium
13 known isotopes (0 stable,
13 radioactive)
253Rf
Mass
253.100528 u
Abundance —
Half-life 9.9 milliseconds
Spin/Parity (1/2+)
Decay Mode(s) Spontaneous fission (83%), α (17%)
254Rf
Mass
254.100055 u
Abundance —
Half-life 23.2 microseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%), α (1.5%)
255Rf
Mass
255.101267 u
Abundance —
Half-life 1.68 seconds
Spin/Parity (9/2-)
Decay Mode(s) Spontaneous fission (58%), α (42%), EC/β⁺ (1%)
256Rf
Mass
256.101151 u
Abundance —
Half-life 6.67 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (99.68%), α (0.32%)
257Rf
Mass
257.102917 u
Abundance —
Half-life 4.4 seconds
Spin/Parity (1/2+)
Decay Mode(s) α (79.3%), Electron capture (19.4%), Spontaneous fission (1.3%)
258Rf
Mass
258.103430 u
Abundance —
Half-life 12.0 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (95.1%), α (4.9%)
259Rf
Mass
259.105601 u
Abundance —
Half-life 2.4 seconds
Spin/Parity —
Decay Mode(s) α (92%), Electron capture (15%), Spontaneous fission (8%)
260Rf
Mass
260.106440 u
Abundance —
Half-life 21 milliseconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%)
261Rf
Mass
261.108770 u
Abundance —
Half-life 68 seconds
Spin/Parity —
Decay Mode(s) α (100%)
262Rf
Mass
262.109923 u
Abundance —
Half-life 2.3 seconds
Spin/Parity 0+
Decay Mode(s) Spontaneous fission (100%)
263Rf
Mass
263.112461 u
Abundance —
Half-life 10 m
Spin/Parity —
Decay Mode(s) α (30%)
265Rf
Mass
265.116683 u
Abundance —
Half-life 1.0 m
Spin/Parity —
Decay Mode(s) Spontaneous fission (100%)
267Rf
Mass
267.121787 u
Abundance —
Half-life 1.3 h
Spin/Parity —
Decay Mode(s) Spontaneous fission (100%), α (33.3%)
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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