See also: List of individual Zirconium isotopes (and general data sources).
General data
Name of the isotope:Zirconium-101; Zr-101Symbol:101Zr or 10140ZrMass number A:101 (= number of nucleons)Atomic number Z:40 (= number of protons)Neutrons N:61Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.525 (= neutron-proton ratio)Neutron excess (N-Z):21Isotopic mass:100.921453(9) u (atomic weight of Zirconium-101)Nuclide mass:100.8995108 u (calculated nuclear mass without electrons)Mass excess:-73.16606 MeVMass defect:0.920108156 u (per nucleus)Nuclear binding energy:857.07522667 MeV (per nucleus) 8.48589333 MeV (average binding energy per nucleon)Separation energy:SN = 4.860(12) MeV (first neutron) SP = 13.128(14) MeV (first proton)Half-life:2.3(1) sDecay constant λ:0.30136833937389 s-1Specific activity α:1.798311960804 × 10+21 Bq g-1 48603025967.697 Ci g-1Spin and parity: (nuclear angular momentum)(3/2+)Magnetic dipole moment:μ(μN) = -0.272(8)Quadrupole moment Q:+0.81(6) barn (100 fm2)Nuclear g-factor:gl = -0.18133333333333Charge radius:4.5119(318) femtometer fmYear of discovery:1972
The following table shows the atomic nuclei that are isotonic (same neutron number N = 61) and isobaric (same nucleon number A = 101) with Zirconium-101. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
