Mercury-196

Properties and data of the isotope ¹⁹⁶Hg.

Contents

General data

Name of the isotope:Mercury-196; Hg-196Symbol:¹⁹⁶Hg or 19680HgMass number A:196 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:116Isotopic mass:195.96583(2) u (atomic weight of Mercury-196)Nuclide mass:195.9219484 u (calculated nuclear mass without electrons)Mass excess:-31.82915 MeVMass defect:1.665302816 u (per nucleus)Nuclear binding energy:1551.21958129 MeV (per nucleus)
7.91438562 MeV (average binding energy per nucleon)Separation energy:S_N = 8.884(23) MeV (first neutron)
S_P = 6.548(3) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:5.4385(31) femtometer fmYear of discovery:1930

Parent Nuclides

Direct parent isotopes are: ¹⁹⁶Tl, ¹⁹⁶Au.

Occurrence

Comparison of the natural Mercury isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Mercury Isotopic mixture	200.592 u	100 %
Isotope ¹⁹⁶Hg	195.96583(2) u	0.15(1) %	stable	0+
Isotope ¹⁹⁸Hg	197.966769(3) u	10.04(3) %	stable	0+
Isotope ¹⁹⁹Hg	198.968281(3) u	16.94(12) %	stable	1/2-
Isotope ²⁰⁰Hg	199.968327(3) u	23.14(9) %	stable	0+
Isotope ²⁰¹Hg	200.970303(5) u	13.17(9) %	stable	3/2-
Isotope ²⁰²Hg	201.970643(5) u	29.74(13) %	stable	0+
Isotope ²⁰⁴Hg	203.973494(3) u	6.82(4) %	stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 116) and isobaric (same nucleon number A = 196) with Mercury-196. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 116	Isobar A = 196
71	¹⁸⁷Lu
72	¹⁸⁸Hf
73	¹⁸⁹Ta
74	¹⁹⁰W	¹⁹⁶W
75	¹⁹¹Re	¹⁹⁶Re
76	¹⁹²Os	¹⁹⁶Os
77	¹⁹³Ir	¹⁹⁶Ir
78	¹⁹⁴Pt	¹⁹⁶Pt
79	¹⁹⁵Au	¹⁹⁶Au
80	¹⁹⁶Hg	¹⁹⁶Hg
81	¹⁹⁷Tl	¹⁹⁶Tl
82	¹⁹⁸Pb	¹⁹⁶Pb
83	¹⁹⁹Bi	¹⁹⁶Bi
84	²⁰⁰Po	¹⁹⁶Po
85	²⁰¹At	¹⁹⁶At
86	²⁰²Rn	¹⁹⁶Rn
87	²⁰³Fr
88	²⁰⁴Ra
89	²⁰⁵Ac