Cf-246 vs Lr-253

Cf-246 (californium-246) | Lr-253 (lawrencium-253)

| Cf-246 | Lr-253 half-life | 35.7 h (34.2 to 37.2 h) | 570 ms (460 to 690 ms) mean lifetime | 51.5 h (49 to 54 h) | 822 ms (0.64 to 1 s) decay constant | 5.39×10^-6 per second | 1.22 per second specific activity | 13200 TBq/g | 2.89×10^9 TBq/g width | 2.46×10^-21 eV | 5.55×10^-16 eV decay modes | α (alpha emission) | ϵ (electron capture) | SF (spontaneous fission) | α (alpha emission) | SF (spontaneous fission) | β^+ (positron emission) final decay products | Pb-206 (100%) | Tl-205 (1.9×10^-8) | Pb-208 (2.6×10^-11) | W-184 (9×10^-14) | Yb-168 (2×10^-17) | Er-164 (2×10^-17) | Dy-160 (8×10^-19) | Dy-156 (5×10^-21) | Sm-144 (5×10^-22) | Ce-140 (5×10^-23) | Dy-164 (0) | Er-168 (0) | Gd-156 (0) | Hf-176 (0) | Hf-180 (0) | Sm-152 (0) | Yb-172 (0) | Tl-205 (30%) | Pb-207 (2×10^-12)

decay mode | α (alpha emission) branching ratio | 100% Q-value | 6.8616 MeV (megaelectronvolts) daughter nuclide | Cm-242 decay mode | ϵ (electron capture) branching ratio | 4×10^-5 Q-value | 123.3 keV (kiloelectronvolts) daughter nuclide | Bk-246 decay mode | SF (spontaneous fission) branching ratio | 2.5×10^-6

decay mode | α (alpha emission) branching ratio | 90% Q-value | 8.93666 MeV (megaelectronvolts) daughter nuclide | Md-249 decay mode | SF (spontaneous fission) branching ratio | 2.6% decay mode | β^+ (positron emission) branching ratio | 1% Q-value | 3.2 MeV (megaelectronvolts) daughter nuclide | No-253

| Cf-246 lead | 22.6 µm water | 61.3 µm air | 55.8 mm

Decay chain Cf-246

Decay chain Lr-253

| Cf-246 | Lr-253 atomic number (Z) | 98 | 103 mass number (A) | 246 | 253 neutron number | 148 | 150 atomic mass | 246.068805309 u (unified atomic mass units) | 253.09521 u (unified atomic mass units) mass excess | 64.091733 MeV (megaelectronvolts) | 88.687 MeV (megaelectronvolts) binding energy per nucleon | 7.499115 MeV (megaelectronvolts) | 7.402 MeV (megaelectronvolts)

Mass properties