About   |   More   |   Search
ChemLin Logo

Osmium-190m

Properties and data of the isotope 190mOs.


Contents

See also: list of Osmium isotopes.

 

General data

Name of the isotope:Osmium-190m; Os-190mSymbol:190mOs or 190m76OsMass number A:190 (= number of nucleons)Atomic number Z:76 (= number of protons)Neutrons N:114Isotopic mass:189.95844(2) u (atomic weight of Osmium-190m)
Excitation energy: 1705.4(2) keV
Nuclide mass:189.9167522 u (calculated nuclear mass without electrons)Mass excess:-38.71289 MeVMass defect:1.624062856 u (per nucleus)Nuclear binding energy:1512.80480599 MeV (per nucleus)
7.96213056 MeV (average binding energy per nucleon)
Half-life:9.9(1) minDecay constant λ:0.0011669144453871 s-1Specific activity α:3.718160402971 × 10+18 Bq g-1
100490821.70193 Ci g-1
Spin and parity:
(nuclear angular momentum)
(10)-Magnetic dipole moment:μ(μN) = - 0.56Nuclear g-factor:gl = -0.056

 

Radioactive Decay

Half-life T½ = 9.9(1) min (minutes) respectively 5.94 × 102 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
Iso190Os100 %

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
190Osstable0+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 114) and isobaric (same nucleon number A = 190) with Osmium-190m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 114Isobar A = 190
70184Yb
71185Lu
72186Hf190Hf
73187Ta190Ta
74188W190W
75189Re190Re
76190Os190Os
77191Ir190Ir
78192Pt190Pt
79193Au190Au
80194Hg190Hg
81195Tl190Tl
82196Pb190Pb
83197Bi190Bi
84198Po190Po
85199At190At
86200Rn
87201Fr
88202Ra
89203Ac

 


More Chemistry

isotopes

Social Media

Facebook

LinkedIn

Twitter


Last update: 2020-10-21


© 1996 - 2025 ChemLin