Mercury-173

Properties and data of the isotope ¹⁷³Hg.

Contents

See also: List of individual Mercury isotopes (and general data sources).

General data

Name of the isotope:Mercury-173; Hg-173Symbol:¹⁷³Hg or 17380HgMass number A:173 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:93Isotopic mass:172.99709(21) u (atomic weight of Mercury-173)Nuclide mass:172.9532084 u (calculated nuclear mass without electrons)Mass excess:-2.71065 MeVMass defect:1.434749748 u (per nucleus)Nuclear binding energy:1336.46078176 MeV (per nucleus)
7.72520683 MeV (average binding energy per nucleon)Separation energy:S_N = 9.72(25) MeV (first neutron)
S_P = 0.680(200) MeV (first proton)Half-life:0.80(8) msDecay constant λ:866.43397569993 s^-1Specific activity α:3.033597353197 × 10⁺²⁴ Bq g^-1
81989117653992 Ci g^-1Spin and parity:
(nuclear angular momentum)(7/2-)Year of discovery:1999

Radioactive Decay

Half-life T_½ = 0.80(8) ms respectively 8.0 × 10^-4 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁶⁹Pt	100 %	7.378(4) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 93) and isobaric (same nucleon number A = 173) with Mercury-173. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 93	Isobar A = 173
54	¹⁴⁷Xe
55	¹⁴⁸Cs
56	¹⁴⁹Ba
57	¹⁵⁰La
58	¹⁵¹Ce
59	¹⁵²Pr
60	¹⁵³Nd
61	¹⁵⁴Pm
62	¹⁵⁵Sm
63	¹⁵⁶Eu
64	¹⁵⁷Gd
65	¹⁵⁸Tb
66	¹⁵⁹Dy	¹⁷³Dy
67	¹⁶⁰Ho	¹⁷³Ho
68	¹⁶¹Er	¹⁷³Er
69	¹⁶²Tm	¹⁷³Tm
70	¹⁶³Yb	¹⁷³Yb
71	¹⁶⁴Lu	¹⁷³Lu
72	¹⁶⁵Hf	¹⁷³Hf
73	¹⁶⁶Ta	¹⁷³Ta
74	¹⁶⁷W	¹⁷³W
75	¹⁶⁸Re	¹⁷³Re
76	¹⁶⁹Os	¹⁷³Os
77	¹⁷⁰Ir	¹⁷³Ir
78	¹⁷¹Pt	¹⁷³Pt
79	¹⁷²Au	¹⁷³Au
80	¹⁷³Hg	¹⁷³Hg