About   |   More   |   Search
ChemLin Logo

Platinum-198

Properties and data of the isotope 198Pt.

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-198; Pt-198Symbol:198Pt or 19878PtMass number A:198 (= number of nucleons)Atomic number Z:78 (= number of protons)Neutrons N:120Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5384615384615 (= neutron-proton ratio)Neutron excess (N-Z):42Isotopic mass:197.96789(2) u (atomic weight of Platinum-198)Nuclide mass:197.9251053 u (calculated nuclear mass without electrons)Mass excess:-29.91027 MeVMass defect:1.682252416 u (per nucleus)Nuclear binding energy:1567.00803199 MeV (per nucleus)
7.91418198 MeV (average binding energy per nucleon)Separation energy:SN = 7.5556(21) MeV (first neutron)
SP = 8.029(20) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:5.4383(32) femtometer fmYear of discovery:1935

 

Radioactive Decay

Half-life T½ = stable.

Decay
mode		DaughterProbabilityDecay energyγ energy
(intensity)
2 β-?

 

Parent Nuclides

Direct parent isotope is: 198Ir.

 

Occurrence

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

 

Atomic Mass maQuantityHalf-lifeSpin
Platinum
Isotopic mixture		195.084 u100 %
Isotope 190Pt189.95993(4) u0.012(2) %6.5(3) × 1011 a0+
Isotope 192Pt191.96104(2) u0.782(24) %stable0+
Isotope 194Pt193.962681(6) u32.864(410) %stable0+
Isotope 195Pt194.964792(6) u33.775(240) %stable1/2-
Isotope 196Pt195.964952(6) u25.211(340) %stable0+
Isotope 198Pt197.96789(2) u7.356(130) %stable0+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 120) and isobaric (same nucleon number A = 198) with Platinum-198. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 120Isobar A = 198
73193Ta
74194W
75195Re198Re
76196Os198Os
77197Ir198Ir
78198Pt198Pt
79199Au198Au
80200Hg198Hg
81201Tl198Tl
82202Pb198Pb
83203Bi198Bi
84204Po198Po
85205At198At
86206Rn198Rn
87207Fr
88208Ra
89209Ac
90210Th

 

External data and identifiers

Adopted Levels, Gammas:NuDat 198Pt

 

More Chemistry

isotopes

Social Media

Facebook

LinkedIn

Twitter

About ChemLin

home

about

contact, imprint

cookie and privacy policy

terms of use

Last update: 2020-10-21

© 1996 - 2026 ChemLin