Platinum-166

Properties and data of the isotope ¹⁶⁶Pt.

Contents

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

General data

Name of the isotope:Platinum-166; Pt-166Symbol:¹⁶⁶Pt or 16678PtMass number A:166 (= number of nucleons)Atomic number Z:78 (= number of protons)Neutrons N:88Isotopic mass:165.99492(32) u (atomic weight of Platinum-166)Nuclide mass:165.9521353 u (calculated nuclear mass without electrons)Mass excess:-4.73199 MeVMass defect:1.377945104 u (per nucleus)Nuclear binding energy:1283.54759671 MeV (per nucleus)
7.73221444 MeV (average binding energy per nucleon)Separation energy:
S_P = 0.43(34) MeV (first proton)Half-life:300(100) μsDecay constant λ:2310.4906018665 s^-1Specific activity α:8.432787793939 × 10⁺²⁴ Bq g^-1
2.279131836199 × 10⁺¹⁴ Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1996

Radioactive Decay

Half-life T_½ = 300(100) μs respectively 3 × 10^-4 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁶²Os	100 %	7.286(15) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 88) and isobaric (same nucleon number A = 166) with Platinum-166. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 88	Isobar A = 166
49	¹³⁷In
50	¹³⁸Sn
51	¹³⁹Sb
52	¹⁴⁰Te
53	¹⁴¹I
54	¹⁴²Xe
55	¹⁴³Cs
56	¹⁴⁴Ba
57	¹⁴⁵La
58	¹⁴⁶Ce
59	¹⁴⁷Pr
60	¹⁴⁸Nd
61	¹⁴⁹Pm
62	¹⁵⁰Sm	¹⁶⁶Sm
63	¹⁵¹Eu	¹⁶⁶Eu
64	¹⁵²Gd	¹⁶⁶Gd
65	¹⁵³Tb	¹⁶⁶Tb
66	¹⁵⁴Dy	¹⁶⁶Dy
67	¹⁵⁵Ho	¹⁶⁶Ho
68	¹⁵⁶Er	¹⁶⁶Er
69	¹⁵⁷Tm	¹⁶⁶Tm
70	¹⁵⁸Yb	¹⁶⁶Yb
71	¹⁵⁹Lu	¹⁶⁶Lu
72	¹⁶⁰Hf	¹⁶⁶Hf
73	¹⁶¹Ta	¹⁶⁶Ta
74	¹⁶²W	¹⁶⁶W
75	¹⁶³Re	¹⁶⁶Re
76	¹⁶⁴Os	¹⁶⁶Os
77	¹⁶⁵Ir	¹⁶⁶Ir
78	¹⁶⁶Pt	¹⁶⁶Pt