Platinum-175

Properties and data of the isotope ¹⁷⁵Pt.

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-175; Pt-175Symbol:¹⁷⁵Pt or 17578PtMass number A:175 (= number of nucleons)Atomic number Z:78 (= number of protons)Neutrons N:97Isotopic mass:174.972395(20) u (atomic weight of Platinum-175)Nuclide mass:174.9296103 u (calculated nuclear mass without electrons)Mass excess:-25.71389 MeVMass defect:1.478454348 u (per nucleus)Nuclear binding energy:1377.17135444 MeV (per nucleus)
7.8695506 MeV (average binding energy per nucleon)Separation energy:S_N = 8.467(21) MeV (first neutron)
S_P = 2.14(3) MeV (first proton)Half-life:2.53(6) sDecay constant λ:0.27397121761263 s^-1Specific activity α:9.48214519558 × 10⁺²⁰ Bq g^-1
25627419447.524 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Year of discovery:1966

Radioactive Decay

Half-life T_½ = 2.53(6) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷¹Os	64(5) %	6.164(4) MeV
EC/β⁺	¹⁷⁵Ir	36(5) %	7.681(22) MeV

Parent Nuclides

Direct parent isotope is: ¹⁷⁹Hg.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 97) and isobaric (same nucleon number A = 175) with Platinum-175. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 97	Isobar A = 175
56	¹⁵³Ba
57	¹⁵⁴La
58	¹⁵⁵Ce
59	¹⁵⁶Pr
60	¹⁵⁷Nd
61	¹⁵⁸Pm
62	¹⁵⁹Sm
63	¹⁶⁰Eu
64	¹⁶¹Gd
65	¹⁶²Tb
66	¹⁶³Dy
67	¹⁶⁴Ho	¹⁷⁵Ho
68	¹⁶⁵Er	¹⁷⁵Er
69	¹⁶⁶Tm	¹⁷⁵Tm
70	¹⁶⁷Yb	¹⁷⁵Yb
71	¹⁶⁸Lu	¹⁷⁵Lu
72	¹⁶⁹Hf	¹⁷⁵Hf
73	¹⁷⁰Ta	¹⁷⁵Ta
74	¹⁷¹W	¹⁷⁵W
75	¹⁷²Re	¹⁷⁵Re
76	¹⁷³Os	¹⁷⁵Os
77	¹⁷⁴Ir	¹⁷⁵Ir
78	¹⁷⁵Pt	¹⁷⁵Pt
79	¹⁷⁶Au	¹⁷⁵Au
80	¹⁷⁷Hg	¹⁷⁵Hg
81	¹⁷⁸Tl
82	¹⁷⁹Pb