Input interpretation
Zr-91 (zirconium-91)
Natural abundance
11.22%
Mass properties
atomic number (Z) | 40 mass number (A) | 91 neutron number | 51 atomic mass | 90.905645767 u (unified atomic mass units) mass excess | -87.890402 MeV (megaelectronvolts) binding energy per nucleon | 8.693257 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 5/2^+ (atomic fermion) magnetic moment | -1.30362 μ_N electric quadrupole moment | -0.206 eb (electron barns)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 1204.78 keV (kiloelectronvolts) | 1/2^+ | 6.2×10^-13 seconds | 7.4×10^-4 eV (electronvolts) 1466.5 keV (kiloelectronvolts) | 5/2^+ | 2.9×10^-13 seconds | 0.0016 eV (electronvolts) 1882.2 keV (kiloelectronvolts) | 7/2^+ | 7.8×10^-14 seconds | 0.0058 eV (electronvolts) 2042.35 keV (kiloelectronvolts) | 3/2^+ | 1.11×10^-14 seconds | 0.0411 eV (electronvolts) 2131.49 keV (kiloelectronvolts) | 9/2^+ | 1.27×10^-13 seconds | 0.00359 eV (electronvolts) 2170.15 keV (kiloelectronvolts) | 11/2^- | 5.5×10^-12 seconds | 8.3×10^-5 eV (electronvolts) 2189.5 keV (kiloelectronvolts) | 5/2^- | 1.8×10^-12 seconds | 2.5×10^-4 eV (electronvolts) 2200.5 keV (kiloelectronvolts) | 7/2^+ | 4.1×10^-13 seconds | 0.0011 eV (electronvolts) 2259.92 keV (kiloelectronvolts) | 13/2^- | (unknown) | (unknown) 2287.8 keV (kiloelectronvolts) | 15/2^- | 2.9×10^-8 seconds | 1.57×10^-8 eV (electronvolts)