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- Boron
- Allotropes of Strontium
- Ni (Symbol of Nickel)
- 8 (Atomic Number of Oxygen)
- Neel Point of Boron in °C
Lr
Lawrencium
13 known isotopes (0 stable,
13 radioactive)
252Lr
Mass
252.095048 u
Abundance —
Half-life 0.33 seconds
Spin/Parity —
Decay Mode(s) EC/β⁺ (60%), α (40%), Spontaneous fission (2%)
253Lr
Mass
253.095034 u
Abundance —
Half-life 0.57 seconds
Spin/Parity (7/2-)
Decay Mode(s) α (98.7%), Spontaneous fission (1.3%)
254Lr
Mass
254.096239 u
Abundance —
Half-life 18.1 seconds
Spin/Parity —
Decay Mode(s) α (71.7%), EC/β⁺ (28.3%), Spontaneous fission (0.1%)
255Lr
Mass
255.096562 u
Abundance —
Half-life 31.1 seconds
Spin/Parity [1/2-]
Decay Mode(s) α (99.7%), Electron capture (0.3%), Spontaneous fission (0.1%)
256Lr
Mass
256.098494 u
Abundance —
Half-life 27.9 seconds
Spin/Parity —
Decay Mode(s) α (85%), Electron capture (15%), Spontaneous fission (0.03%)
257Lr
Mass
257.099480 u
Abundance —
Half-life 4 seconds
Spin/Parity —
Decay Mode(s) α (100%), Electron capture (15%), Spontaneous fission (0.033%)
258Lr
Mass
258.101753 u
Abundance —
Half-life 3.92 seconds
Spin/Parity —
Decay Mode(s) α (97.4%), Electron capture (2.6%)
259Lr
Mass
259.102900 u
Abundance —
Half-life 6.2 seconds
Spin/Parity —
Decay Mode(s) α (78%), Spontaneous fission (22%)
260Lr
Mass
260.105504 u
Abundance —
Half-life 180 seconds
Spin/Parity —
Decay Mode(s) α (80%), Electron capture (40%)
261Lr
Mass
261.106879 u
Abundance —
Half-life 39 m
Spin/Parity —
Decay Mode(s) Unknown
262Lr
Mass
262.109615 u
Abundance —
Half-life 4 h
Spin/Parity —
Decay Mode(s) Spontaneous fission (10%)
264Lr
Mass
264.114198 u
Abundance —
Half-life 4.9 h
Spin/Parity —
Decay Mode(s) Spontaneous fission (100%)
266Lr
Mass
266.119874 u
Abundance —
Half-life 11 h
Spin/Parity —
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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