Rhodium-98

Properties and data of the isotope ⁹⁸Rh.

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-98; Rh-98Symbol:⁹⁸Rh or 9845RhMass number A:98 (= number of nucleons)Atomic number Z:45 (= number of protons)Neutrons N:53Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.1777777777778 (= neutron-proton ratio)Neutron excess (N-Z):8Isotopic mass:97.910708(13) u (atomic weight of Rhodium-98)Nuclide mass:97.8860232 u (calculated nuclear mass without electrons)Mass excess:-83.17496 MeVMass defect:0.900658988 u (per nucleus)Nuclear binding energy:838.95844337 MeV (per nucleus)
8.56080044 MeV (average binding energy per nucleon)Separation energy:S_N = 8.65(4) MeV (first neutron)
S_P = 4.344(12) MeV (first proton)Half-life:8.72(12) minDecay constant λ:0.0013248225928134 s^-1Specific activity α:8.225018833349 × 10⁺¹⁸ Bq g^-1
222297806.30673 Ci g^-1Spin and parity:
(nuclear angular momentum)(2)+Year of discovery:1955

Radioactive Decay

Half-life T_½ = 8.72(12) min (minutes) respectively 5.232 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁹⁸Ru	100 %	5.050(14) MeV

Parent Nuclides

Direct parent isotope is: ⁹⁸Pd.

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
^98mRh	+x keV	3.6(2) min	(5+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 53) and isobaric (same nucleon number A = 98) with Rhodium-98. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 53	Isobar A = 98
29	⁸²Cu
30	⁸³Zn
31	⁸⁴Ga
32	⁸⁵Ge
33	⁸⁶As
34	⁸⁷Se
35	⁸⁸Br	⁹⁸Br
36	⁸⁹Kr	⁹⁸Kr
37	⁹⁰Rb	⁹⁸Rb
38	⁹¹Sr	⁹⁸Sr
39	⁹²Y	⁹⁸Y
40	⁹³Zr	⁹⁸Zr
41	⁹⁴Nb	⁹⁸Nb
42	⁹⁵Mo	⁹⁸Mo
43	⁹⁶Tc	⁹⁸Tc
44	⁹⁷Ru	⁹⁸Ru
45	⁹⁸Rh	⁹⁸Rh
46	⁹⁹Pd	⁹⁸Pd
47	¹⁰⁰Ag	⁹⁸Ag
48	¹⁰¹Cd	⁹⁸Cd
49	¹⁰²In	⁹⁸In
50	¹⁰³Sn	⁹⁸Sn
51	¹⁰⁴Sb
52	¹⁰⁵Te