Mercury-180

Properties and data of the isotope ¹⁸⁰Hg.

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-180; Hg-180Symbol:¹⁸⁰Hg or 18080HgMass number A:180 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:100Isotopic mass:179.978260(14) u (atomic weight of Mercury-180)Nuclide mass:179.9343784 u (calculated nuclear mass without electrons)Mass excess:-20.25068 MeVMass defect:1.51423416 u (per nucleus)Nuclear binding energy:1410.50003464 MeV (per nucleus)
7.8361113 MeV (average binding energy per nucleon)Separation energy:S_N = 11.39(3) MeV (first neutron)
S_P = 2.551(17) MeV (first proton)Half-life:2.59(1) sDecay constant λ:0.26762439403859 s^-1Specific activity α:9.003753063997 × 10⁺²⁰ Bq g^-1
24334467740.535 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1970

Radioactive Decay

Half-life T_½ = 2.59(1) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷⁶Pt	48(2) %	6.2585(24) MeV
EC/β⁺	¹⁸⁰Au	52(2) %	5.375(14) MeV

Parent Nuclides

Direct parent isotope is: ¹⁸⁴Pb.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 100) and isobaric (same nucleon number A = 180) with Mercury-180. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 100	Isobar A = 180
58	¹⁵⁸Ce
59	¹⁵⁹Pr
60	¹⁶⁰Nd
61	¹⁶¹Pm
62	¹⁶²Sm
63	¹⁶³Eu
64	¹⁶⁴Gd
65	¹⁶⁵Tb
66	¹⁶⁶Dy
67	¹⁶⁷Ho
68	¹⁶⁸Er
69	¹⁶⁹Tm
70	¹⁷⁰Yb	¹⁸⁰Yb
71	¹⁷¹Lu	¹⁸⁰Lu
72	¹⁷²Hf	¹⁸⁰Hf
73	¹⁷³Ta	¹⁸⁰Ta
74	¹⁷⁴W	¹⁸⁰W
75	¹⁷⁵Re	¹⁸⁰Re
76	¹⁷⁶Os	¹⁸⁰Os
77	¹⁷⁷Ir	¹⁸⁰Ir
78	¹⁷⁸Pt	¹⁸⁰Pt
79	¹⁷⁹Au	¹⁸⁰Au
80	¹⁸⁰Hg	¹⁸⁰Hg
81	¹⁸¹Tl	¹⁸⁰Tl
82	¹⁸²Pb	¹⁸⁰Pb