Platinum-196

Properties and data of the isotope ¹⁹⁶Pt.

Contents

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

General data

Name of the isotope:Platinum-196; Pt-196Symbol:¹⁹⁶Pt or 19678PtMass number A:196 (= number of nucleons)Atomic number Z:78 (= number of protons)Neutrons N:118Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5128205128205 (= neutron-proton ratio)Neutron excess (N-Z):40Isotopic mass:195.964952(6) u (atomic weight of Platinum-196)Nuclide mass:195.9221673 u (calculated nuclear mass without electrons)Mass excess:-32.647 MeVMass defect:1.667860584 u (per nucleus)Nuclear binding energy:1553.60212683 MeV (per nucleus)
7.92654146 MeV (average binding energy per nucleon)Separation energy:S_N = 7.92198(13) MeV (first neutron)
S_P = 8.2412(13) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:5.4307(27) femtometer fmYear of discovery:1935

Parent Nuclides

Direct parent isotopes are: ¹⁹⁶Au, ¹⁹⁶Ir.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Platinum Isotopic mixture	195.084 u	100 %
Isotope ¹⁹⁰Pt	189.95993(4) u	0.012(2) %	6.5(3) × 10¹¹ a	0+
Isotope ¹⁹²Pt	191.96104(2) u	0.782(24) %	stable	0+
Isotope ¹⁹⁴Pt	193.962681(6) u	32.864(410) %	stable	0+
Isotope ¹⁹⁵Pt	194.964792(6) u	33.775(240) %	stable	1/2-
Isotope ¹⁹⁶Pt	195.964952(6) u	25.211(340) %	stable	0+
Isotope ¹⁹⁸Pt	197.96789(2) u	7.356(130) %	stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 118) and isobaric (same nucleon number A = 196) with Platinum-196. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 118	Isobar A = 196
72	¹⁹⁰Hf
73	¹⁹¹Ta
74	¹⁹²W	¹⁹⁶W
75	¹⁹³Re	¹⁹⁶Re
76	¹⁹⁴Os	¹⁹⁶Os
77	¹⁹⁵Ir	¹⁹⁶Ir
78	¹⁹⁶Pt	¹⁹⁶Pt
79	¹⁹⁷Au	¹⁹⁶Au
80	¹⁹⁸Hg	¹⁹⁶Hg
81	¹⁹⁹Tl	¹⁹⁶Tl
82	²⁰⁰Pb	¹⁹⁶Pb
83	²⁰¹Bi	¹⁹⁶Bi
84	²⁰²Po	¹⁹⁶Po
85	²⁰³At	¹⁹⁶At
86	²⁰⁴Rn	¹⁹⁶Rn
87	²⁰⁵Fr
88	²⁰⁶Ra
89	²⁰⁷Ac
90	²⁰⁸Th