Rhodium-92

Properties and data of the isotope ⁹²Rh.

Content

General data

Name of the isotope:Rhodium-92; Rh-92Symbol:⁹²Rh or 9245RhMass number A:92 (= number of nucleons)Atomic number Z:45 (= number of protons)Neutrons N:47Isotopic mass:91.932368(5) u (atomic weight of Rhodium-92)Nuclide mass:91.9076832 u (calculated nuclear mass without electrons)Mass excess:-62.9988 MeVMass defect:0.827009492 u (per nucleus)Nuclear binding energy:770.35437974 MeV (per nucleus)
8.37341717 MeV (average binding energy per nucleon)Separation energy:S_N = 12.50(30) MeV (first neutron)
S_P = 2.048(5) MeV (first proton)Half-life:4.66(25) sDecay constant λ:0.14874403016308 s^-1Specific activity α:9.843489029854 × 10⁺²⁰ Bq g^-1
26604024405.012 Ci g^-1Spin and parity:
(nuclear angular momentum)(6+)Mirror nucleus:Silver-92Year of discovery:1994

Radioactive Decay

Half-life T_½ = 4.66(25) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁹²Ru	98.1 %	11.302(5) MeV
β⁺, p	⁹¹Tc	1.9(1) %

Parent Nuclides

Direct parent isotope is: ⁹²Ru.

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
^92mRh	+ X	0.53(37) s	(2+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 47) and isobaric (same nucleon number A = 92) with Rhodium-92. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 47	Isobar A = 92
26	⁷³Fe
27	⁷⁴Co
28	⁷⁵Ni
29	⁷⁶Cu
30	⁷⁷Zn
31	⁷⁸Ga
32	⁷⁹Ge
33	⁸⁰As	⁹²As
34	⁸¹Se	⁹²Se
35	⁸²Br	⁹²Br
36	⁸³Kr	⁹²Kr
37	⁸⁴Rb	⁹²Rb
38	⁸⁵Sr	⁹²Sr
39	⁸⁶Y	⁹²Y
40	⁸⁷Zr	⁹²Zr
41	⁸⁸Nb	⁹²Nb
42	⁸⁹Mo	⁹²Mo
43	⁹⁰Tc	⁹²Tc
44	⁹¹Ru	⁹²Ru
45	⁹²Rh	⁹²Rh
46	⁹³Pd	⁹²Pd
47	⁹⁴Ag	⁹²Ag
48	⁹⁵Cd
49	⁹⁶In