Rhodium-97

Properties and data of the isotope ⁹⁷Rh.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Rhodium-97; Rh-97Symbol:⁹⁷Rh or 9745RhMass number A:97 (= number of nucleons)Atomic number Z:45 (= number of protons)Neutrons N:52Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.1555555555556 (= neutron-proton ratio)Neutron excess (N-Z):7Isotopic mass:96.91133(4) u (atomic weight of Rhodium-97)Nuclide mass:96.8866452 u (calculated nuclear mass without electrons)Mass excess:-82.59557 MeVMass defect:0.891372072 u (per nucleus)Nuclear binding energy:830.30773684 MeV (per nucleus)
8.55987358 MeV (average binding energy per nucleon)Separation energy:S_N = 10.98(4) MeV (first neutron)
S_P = 3.81(4) MeV (first proton)Half-life:30.7(6) minDecay constant λ:0.00037630140095545 s^-1Specific activity α:2.360562544109 × 10⁺¹⁸ Bq g^-1
63798987.678641 Ci g^-1Spin and parity:
(nuclear angular momentum)9/2+Year of discovery:1955

Radioactive Decay

Half-life T_½ = 30.7(6) min (minutes) respectively 1.842 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁹⁷Ru	100 %	3.52(4) MeV

Parent Nuclides

Direct parent isotopes are: ⁹⁷Pd, ⁹⁸Ag.

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
^97mRh	258.76(18) keV	46.2(16) min	1/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 52) and isobaric (same nucleon number A = 97) with Rhodium-97. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 52	Isobar A = 97
28	⁸⁰Ni
29	⁸¹Cu
30	⁸²Zn
31	⁸³Ga
32	⁸⁴Ge
33	⁸⁵As
34	⁸⁶Se
35	⁸⁷Br	⁹⁷Br
36	⁸⁸Kr	⁹⁷Kr
37	⁸⁹Rb	⁹⁷Rb
38	⁹⁰Sr	⁹⁷Sr
39	⁹¹Y	⁹⁷Y
40	⁹²Zr	⁹⁷Zr
41	⁹³Nb	⁹⁷Nb
42	⁹⁴Mo	⁹⁷Mo
43	⁹⁵Tc	⁹⁷Tc
44	⁹⁶Ru	⁹⁷Ru
45	⁹⁷Rh	⁹⁷Rh
46	⁹⁸Pd	⁹⁷Pd
47	⁹⁹Ag	⁹⁷Ag
48	¹⁰⁰Cd	⁹⁷Cd
49	¹⁰¹In	⁹⁷In
50	¹⁰²Sn
51	¹⁰³Sb