See also: List of individual Palladium isotopes (and general data sources).
General data
Name of the isotope:Palladium-111; Pd-111Symbol:111Pd or 11146PdMass number A:111 (= number of nucleons)Atomic number Z:46 (= number of protons)Neutrons N:65Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.4130434782609 (= neutron-proton ratio)Neutron excess (N-Z):19Isotopic mass:110.9076903(8) u (atomic weight of Palladium-111)Nuclide mass:110.8824569 u (calculated nuclear mass without electrons)Mass excess:-85.98593 MeVMass defect:1.015480712 u (per nucleus)Nuclear binding energy:945.91419034 MeV (per nucleus) 8.52174946 MeV (average binding energy per nucleon)Separation energy:SN = 5.7263(4) MeV (first neutron) SP = 10.446(18) MeV (first proton)Half-life:23.4(2) minDecay constant λ:0.00049369457304839 s-1Specific activity α:2.680696174722 × 10+18 Bq g-1 72451247.965481 Ci g-1Spin and parity: (nuclear angular momentum)5/2+Year of discovery:1937
Radioactive Decay
Half-life T½ = 23.4(2) min (minutes) respectively 1.404 × 103 seconds s.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 65) and isobaric (same nucleon number A = 111) with Palladium-111. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
