Platinum-179

Properties and data of the isotope ¹⁷⁹Pt.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Platinum-179; Pt-179Symbol:¹⁷⁹Pt or 17978PtMass number A:179 (= number of nucleons)Atomic number Z:78 (= number of protons)Neutrons N:101Isotopic mass:178.965359(9) u (atomic weight of Platinum-179)Nuclide mass:178.9225743 u (calculated nuclear mass without electrons)Mass excess:-32.26788 MeVMass defect:1.520150012 u (per nucleus)Nuclear binding energy:1416.01061528 MeV (per nucleus)
7.91067383 MeV (average binding energy per nucleon)Separation energy:S_N = 8.342(13) MeV (first neutron)
S_P = 3.305(21) MeV (first proton)Half-life:21.2(4) sDecay constant λ:0.032695621724526 s^-1Specific activity α:1.106166514203 × 10⁺²⁰ Bq g^-1
2989639227.5781 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-Magnetic dipole moment:μ(μ_N) = + 0.43(3)Nuclear g-factor:g_l = 0.86Charge radius:5.3915(50) femtometer fmYear of discovery:1966

Radioactive Decay

Half-life T_½ = 21.2(4) s respectively 2.12 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷⁵Os	0.24(3) %	5.412(9) MeV
EC/β⁺	¹⁷⁹Ir	99.76(3) %	5.814(13) MeV

Parent Nuclides

Direct parent isotope is: ¹⁸³Hg.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 101) and isobaric (same nucleon number A = 179) with Platinum-179. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 101	Isobar A = 179
58	¹⁵⁹Ce
59	¹⁶⁰Pr
60	¹⁶¹Nd
61	¹⁶²Pm
62	¹⁶³Sm
63	¹⁶⁴Eu
64	¹⁶⁵Gd
65	¹⁶⁶Tb
66	¹⁶⁷Dy
67	¹⁶⁸Ho
68	¹⁶⁹Er
69	¹⁷⁰Tm	¹⁷⁹Tm
70	¹⁷¹Yb	¹⁷⁹Yb
71	¹⁷²Lu	¹⁷⁹Lu
72	¹⁷³Hf	¹⁷⁹Hf
73	¹⁷⁴Ta	¹⁷⁹Ta
74	¹⁷⁵W	¹⁷⁹W
75	¹⁷⁶Re	¹⁷⁹Re
76	¹⁷⁷Os	¹⁷⁹Os
77	¹⁷⁸Ir	¹⁷⁹Ir
78	¹⁷⁹Pt	¹⁷⁹Pt
79	¹⁸⁰Au	¹⁷⁹Au
80	¹⁸¹Hg	¹⁷⁹Hg
81	¹⁸²Tl	¹⁷⁹Tl
82	¹⁸³Pb	¹⁷⁹Pb
83	¹⁸⁴Bi