Mercury-176

Properties and data of the isotope ¹⁷⁶Hg.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Mercury-176; Hg-176Symbol:¹⁷⁶Hg or 17680HgMass number A:176 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:96Isotopic mass:175.987348(12) u (atomic weight of Mercury-176)Nuclide mass:175.9434664 u (calculated nuclear mass without electrons)Mass excess:-11.78526 MeVMass defect:1.470486496 u (per nucleus)Nuclear binding energy:1369.74934811 MeV (per nucleus)
7.78266675 MeV (average binding energy per nucleon)Separation energy:S_N = 11.88(7) MeV (first neutron)
S_P = 1.67(4) MeV (first proton)Half-life:20.3(14) msDecay constant λ:34.145181308372 s^-1Specific activity α:1.175011951583 × 10⁺²³ Bq g^-1
3175707977252.4 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1983

Radioactive Decay

Half-life T_½ = 20.3(14) ms respectively 2.03 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷²Pt	94(12) %	6.897(6) MeV

Parent Nuclides

Direct parent isotope is: ¹⁸⁰Pb.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 96) and isobaric (same nucleon number A = 176) with Mercury-176. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 96	Isobar A = 176
55	¹⁵¹Cs
56	¹⁵²Ba
57	¹⁵³La
58	¹⁵⁴Ce
59	¹⁵⁵Pr
60	¹⁵⁶Nd
61	¹⁵⁷Pm
62	¹⁵⁸Sm
63	¹⁵⁹Eu
64	¹⁶⁰Gd
65	¹⁶¹Tb
66	¹⁶²Dy
67	¹⁶³Ho
68	¹⁶⁴Er	¹⁷⁶Er
69	¹⁶⁵Tm	¹⁷⁶Tm
70	¹⁶⁶Yb	¹⁷⁶Yb
71	¹⁶⁷Lu	¹⁷⁶Lu
72	¹⁶⁸Hf	¹⁷⁶Hf
73	¹⁶⁹Ta	¹⁷⁶Ta
74	¹⁷⁰W	¹⁷⁶W
75	¹⁷¹Re	¹⁷⁶Re
76	¹⁷²Os	¹⁷⁶Os
77	¹⁷³Ir	¹⁷⁶Ir
78	¹⁷⁴Pt	¹⁷⁶Pt
79	¹⁷⁵Au	¹⁷⁶Au
80	¹⁷⁶Hg	¹⁷⁶Hg
81	¹⁷⁷Tl	¹⁷⁶Tl
82	¹⁷⁸Pb