See also: List of individual Mercury isotopes (and general data sources).
General data
Name of the isotope:Mercury-174; Hg-174Symbol:174Hg or 17480HgMass number A:174 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:94Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.175 (= neutron-proton ratio)Neutron excess (N-Z):14Isotopic mass:173.992871(21) u (atomic weight of Mercury-174)Nuclide mass:173.9489894 u (calculated nuclear mass without electrons)Mass excess:-6.64062 MeVMass defect:1.447633664 u (per nucleus)Nuclear binding energy:1348.46207221 MeV (per nucleus) 7.74978202 MeV (average binding energy per nucleon)Separation energy:SN = 12.0(2) MeV (first neutron) SP = 1.10(3) MeV (first proton)Half-life:2.1 msDecay constant λ:330.07008598093 s-1Specific activity α:1.142419518120 × 10+24 Bq g-1 30876203192449 Ci g-1Spin and parity: (nuclear angular momentum)Year of discovery:1997
Radioactive Decay
Half-life T½ = 2.1 ms respectively 2.1 × 10-3 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
α
170Pt
99.6(4) %
7.233(6) MeV
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 94) and isobaric (same nucleon number A = 174) with Mercury-174. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
