Platinum-180

Properties and data of the isotope ¹⁸⁰Pt.

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-180; Pt-180Symbol:¹⁸⁰Pt or 18078PtMass number A:180 (= number of nucleons)Atomic number Z:78 (= number of protons)Neutrons N:102Isotopic mass:179.963032(12) u (atomic weight of Platinum-180)Nuclide mass:179.9202473 u (calculated nuclear mass without electrons)Mass excess:-34.43547 MeVMass defect:1.531141928 u (per nucleus)Nuclear binding energy:1426.24951908 MeV (per nucleus)
7.92360844 MeV (average binding energy per nucleon)Separation energy:S_N = 10.239(14) MeV (first neutron)
S_P = 3.643(15) MeV (first proton)Half-life:56(2) sDecay constant λ:0.012377628224285 s^-1Specific activity α:4.16423579209 × 10⁺¹⁹ Bq g^-1
1125469132.9997 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Charge radius:5.3891(49) femtometer fmYear of discovery:1966

Radioactive Decay

Half-life T_½ = 56(2) s respectively 5.6 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷⁶Os	ca. 0.3 %	5.24(3) MeV
EC/β⁺	¹⁸⁰Ir	ca. 99.7 %	3.542(24) MeV

Parent Nuclides

Direct parent isotopes are: ¹⁸⁴Hg, ¹⁸¹Hg, ¹⁸⁰Au.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 102) and isobaric (same nucleon number A = 180) with Platinum-180. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 102	Isobar A = 180
60	¹⁶²Nd
61	¹⁶³Pm
62	¹⁶⁴Sm
63	¹⁶⁵Eu
64	¹⁶⁶Gd
65	¹⁶⁷Tb
66	¹⁶⁸Dy
67	¹⁶⁹Ho
68	¹⁷⁰Er
69	¹⁷¹Tm
70	¹⁷²Yb	¹⁸⁰Yb
71	¹⁷³Lu	¹⁸⁰Lu
72	¹⁷⁴Hf	¹⁸⁰Hf
73	¹⁷⁵Ta	¹⁸⁰Ta
74	¹⁷⁶W	¹⁸⁰W
75	¹⁷⁷Re	¹⁸⁰Re
76	¹⁷⁸Os	¹⁸⁰Os
77	¹⁷⁹Ir	¹⁸⁰Ir
78	¹⁸⁰Pt	¹⁸⁰Pt
79	¹⁸¹Au	¹⁸⁰Au
80	¹⁸²Hg	¹⁸⁰Hg
81	¹⁸³Tl	¹⁸⁰Tl
82	¹⁸⁴Pb	¹⁸⁰Pb
83	¹⁸⁵Bi
84	¹⁸⁶Po