Mercury-182

Properties and data of the isotope ¹⁸²Hg.

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-182; Hg-182Symbol:¹⁸²Hg or 18280HgMass number A:182 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:102Isotopic mass:181.974689(11) u (atomic weight of Mercury-182)Nuclide mass:181.9308074 u (calculated nuclear mass without electrons)Mass excess:-23.57704 MeVMass defect:1.535134992 u (per nucleus)Nuclear binding energy:1429.96903424 MeV (per nucleus)
7.85697272 MeV (average binding energy per nucleon)Separation energy:S_N = 10.987(18) MeV (first neutron)
S_P = 2.995(22) MeV (first proton)Half-life:10.83(6) sDecay constant λ:0.064002509746994 s^-1Specific activity α:2.129459276717 × 10⁺²⁰ Bq g^-1
5755295342.4797 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Charge radius:5.3833(52) femtometer fmYear of discovery:1968

Radioactive Decay

Half-life T_½ = 10.83(6) s respectively 1.083 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷⁸Pt	13.8(9) %	5.996(5) MeV
EC/β⁺	¹⁸²Au	86.2(9) %	4.724(23) MeV

Parent Nuclides

Direct parent isotopes are: ¹⁸⁶Pb, ¹⁸²Tl.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 102) and isobaric (same nucleon number A = 182) with Mercury-182. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 102	Isobar A = 182
60	¹⁶²Nd
61	¹⁶³Pm
62	¹⁶⁴Sm
63	¹⁶⁵Eu
64	¹⁶⁶Gd
65	¹⁶⁷Tb
66	¹⁶⁸Dy
67	¹⁶⁹Ho
68	¹⁷⁰Er
69	¹⁷¹Tm
70	¹⁷²Yb	¹⁸²Yb
71	¹⁷³Lu	¹⁸²Lu
72	¹⁷⁴Hf	¹⁸²Hf
73	¹⁷⁵Ta	¹⁸²Ta
74	¹⁷⁶W	¹⁸²W
75	¹⁷⁷Re	¹⁸²Re
76	¹⁷⁸Os	¹⁸²Os
77	¹⁷⁹Ir	¹⁸²Ir
78	¹⁸⁰Pt	¹⁸²Pt
79	¹⁸¹Au	¹⁸²Au
80	¹⁸²Hg	¹⁸²Hg
81	¹⁸³Tl	¹⁸²Tl
82	¹⁸⁴Pb	¹⁸²Pb
83	¹⁸⁵Bi
84	¹⁸⁶Po