Osmium-192m2

Properties and data of the isotope ^192m2Os.

Contents

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

General data

Name of the isotope:Osmium-192m2; Os-192m2Symbol:^192m2Os or 192m276OsMass number A:192 (= number of nucleons)Atomic number Z:76 (= number of protons)Neutrons N:116Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.5263157894737 (= neutron-proton ratio)Neutron excess (N-Z):40Excitation energy:4113.8(20) keVIsotopic mass:191.96148(2) u (atomic weight of Osmium-192m2)Nuclide mass:191.9197922 u (calculated nuclear mass without electrons)Mass excess:-35.88115 MeVMass defect:1.638352688 u (per nucleus)Nuclear binding energy:1526.11569876 MeV (per nucleus)
7.94851926 MeV (average binding energy per nucleon)Half-life:0.19(10) μsDecay constant λ:3648143.0555787 s^-1Specific activity α:1.144481225780 × 10⁺²⁸ Bq g^-1
3.093192502110 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)(16+)

Radioactive Decay

Half-life T_½ = 0.19(10) μs respectively 1.9 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	¹⁹²Os	100 %

Nuclear Isomers

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

Nuclear Isomer	Excitation Energy	Half-life	Spin
¹⁹²Os		stable	0+
^192mOs	2015.40(11) keV	5.9(1) s	(10-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 116) and isobaric (same nucleon number A = 192) with Osmium-192m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 116	Isobar A = 192
71	¹⁸⁷Lu
72	¹⁸⁸Hf
73	¹⁸⁹Ta	¹⁹²Ta
74	¹⁹⁰W	¹⁹²W
75	¹⁹¹Re	¹⁹²Re
76	¹⁹²Os	¹⁹²Os
77	¹⁹³Ir	¹⁹²Ir
78	¹⁹⁴Pt	¹⁹²Pt
79	¹⁹⁵Au	¹⁹²Au
80	¹⁹⁶Hg	¹⁹²Hg
81	¹⁹⁷Tl	¹⁹²Tl
82	¹⁹⁸Pb	¹⁹²Pb
83	¹⁹⁹Bi	¹⁹²Bi
84	²⁰⁰Po	¹⁹²Po
85	²⁰¹At	¹⁹²At
86	²⁰²Rn
87	²⁰³Fr
88	²⁰⁴Ra
89	²⁰⁵Ac