Mercury-194
Properties and data of the isotope 194Hg.
See also: list of Mercury isotopes.
General data
Name of the isotope:Mercury-194; Hg-194Symbol:194Hg or 19480HgMass number A:194 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:114Isotopic mass:193.965449(3) u (atomic weight of Mercury-194)Nuclide mass:193.9215674 u (calculated nuclear mass without electrons)Mass excess:-32.18405 MeVMass defect:1.648353984 u (per nucleus)Nuclear binding energy:1535.43184597 MeV (per nucleus)
7.91459714 MeV (average binding energy per nucleon)Separation energy:SN = 9.193(16) MeV (first neutron)
SP = 6.068(9) MeV (first proton)Half-life:444(77) aDecay constant λ:4.951051289713 × 10-11 s-1Specific activity α:154486674981.5 Bq g-1
4.1753155400405 Ci g-1Spin and parity:
(nuclear angular momentum)0+Charge radius:5.4309(33) femtometer fmYear of discovery:1962
Radioactive Decay
Half-life T½ = 444(77) a respectively 1.4 × 1010 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EC | 194Au | 100 % | 28(4) MeV | |
Parent Nuclides
Direct parent isotope is: 194Tl.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 114) and isobaric (same nucleon number A = 194) with Mercury-194. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 114 | Isobar A = 194 |
70 | 184Yb | |
71 | 185Lu | |
72 | 186Hf | |
73 | 187Ta | 194Ta |
74 | 188W | 194W |
75 | 189Re | 194Re |
76 | 190Os | 194Os |
77 | 191Ir | 194Ir |
78 | 192Pt | 194Pt |
79 | 193Au | 194Au |
80 | 194Hg | 194Hg |
81 | 195Tl | 194Tl |
82 | 196Pb | 194Pb |
83 | 197Bi | 194Bi |
84 | 198Po | 194Po |
85 | 199At | 194At |
86 | 200Rn | 194Rn |
87 | 201Fr | |
88 | 202Ra | |
89 | 203Ac | |
External data and identifiers
Last update: 2023-05-16
Perma link: https://www.chemlin.org/isotope/mercury-194
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