Rhodium-114m

Properties and data of the isotope ¹¹⁴Rh.

Content

General data

Name of the isotope:Rhodium-114m; Rh-114mSymbol:¹¹⁴Rh or 11445RhMass number A:114 (= number of nucleons)Atomic number Z:45 (= number of protons)Neutrons N:69Isotopic mass:113.91872(8) u (atomic weight of Rhodium-114m)
Excitation energy: +x keVNuclide mass:113.8940352 u (calculated nuclear mass without electrons)Mass excess:-75.71183 MeVMass defect:1.031285644 u (per nucleus)Nuclear binding energy:960.63638967 MeV (per nucleus)
8.426635 MeV (average binding energy per nucleon)Half-life:1.85(5) sDecay constant λ:0.37467415165402 s^-1Specific activity α:1.996761520210 × 10⁺²¹ Bq g^-1
53966527573.257 Ci g^-1Spin and parity:
(nuclear angular momentum)(7-)

Radioactive Decay

Half-life T_½ = 1.85(5) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹¹⁴Pd	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
¹¹⁴Rh		1.85(5) s	1+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 69) and isobaric (same nucleon number A = 114) with Rhodium-114m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 69	Isobar A = 114
38	¹⁰⁷Sr
39	¹⁰⁸Y
40	¹⁰⁹Zr
41	¹¹⁰Nb	¹¹⁴Nb
42	¹¹¹Mo	¹¹⁴Mo
43	¹¹²Tc	¹¹⁴Tc
44	¹¹³Ru	¹¹⁴Ru
45	¹¹⁴Rh	¹¹⁴Rh
46	¹¹⁵Pd	¹¹⁴Pd
47	¹¹⁶Ag	¹¹⁴Ag
48	¹¹⁷Cd	¹¹⁴Cd
49	¹¹⁸In	¹¹⁴In
50	¹¹⁹Sn	¹¹⁴Sn
51	¹²⁰Sb	¹¹⁴Sb
52	¹²¹Te	¹¹⁴Te
53	¹²²I	¹¹⁴I
54	¹²³Xe	¹¹⁴Xe
55	¹²⁴Cs	¹¹⁴Cs
56	¹²⁵Ba	¹¹⁴Ba
57	¹²⁶La
58	¹²⁷Ce
59	¹²⁸Pr
60	¹²⁹Nd
61	¹³⁰Pm
62	¹³¹Sm
63	¹³²Eu