Mercury-193m

Properties and data of the isotope ^193mHg.

Contents

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

General data

Name of the isotope:Mercury-193m; Hg-193mSymbol:^193mHg or 193m80HgMass number A:193 (= number of nucleons)Atomic number Z:80 (= number of protons)Neutrons N:113Isotopic mass:192.966653(17) u (atomic weight of Mercury-193m)
Excitation energy: 140.76(5) keVNuclide mass:192.9227714 u (calculated nuclear mass without electrons)Mass excess:-31.06253 MeVMass defect:1.638485068 u (per nucleus)Nuclear binding energy:1526.23900993 MeV (per nucleus)
7.90797414 MeV (average binding energy per nucleon)Half-life:11.8(2) hDecay constant λ:1.631702402448 × 10^-5 s^-1Specific activity α:5.117886306791 × 10⁺¹⁶ Bq g^-1
1383212.515349 Ci g^-1Spin and parity:
(nuclear angular momentum)13/2(+)Magnetic dipole moment:μ(μ_N) = - 1.0585(8)Quadrupole moment Q:+0.92(2) barn (100 fm²)Nuclear g-factor:g_l = -0.16284615384615

Radioactive Decay

Half-life T_½ = 11.8(2) h (hours) respectively 4.2480 × 10⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	¹⁹³Au	92.8(5) %
Iso	¹⁹³Hg	7.2(5) %

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
¹⁹³Hg		3.80(15) h	3/2(-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 113) and isobaric (same nucleon number A = 193) with Mercury-193m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 113	Isobar A = 193
70	¹⁸³Yb
71	¹⁸⁴Lu
72	¹⁸⁵Hf
73	¹⁸⁶Ta	¹⁹³Ta
74	¹⁸⁷W	¹⁹³W
75	¹⁸⁸Re	¹⁹³Re
76	¹⁸⁹Os	¹⁹³Os
77	¹⁹⁰Ir	¹⁹³Ir
78	¹⁹¹Pt	¹⁹³Pt
79	¹⁹²Au	¹⁹³Au
80	¹⁹³Hg	¹⁹³Hg
81	¹⁹⁴Tl	¹⁹³Tl
82	¹⁹⁵Pb	¹⁹³Pb
83	¹⁹⁶Bi	¹⁹³Bi
84	¹⁹⁷Po	¹⁹³Po
85	¹⁹⁸At	¹⁹³At
86	¹⁹⁹Rn	¹⁹³Rn
87	²⁰⁰Fr
88	²⁰¹Ra