Ruthenium-107

Properties and data of the isotope ¹⁰⁷Ru.

Content

General data

Name of the isotope:Ruthenium-107; Ru-107Symbol:¹⁰⁷Ru or 10744RuMass number A:107 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:63Isotopic mass:106.909970(9) u (atomic weight of Ruthenium-107)Nuclide mass:106.8858337 u (calculated nuclear mass without electrons)Mass excess:-83.8624 MeVMass defect:0.98022111600001 u (per nucleus)Nuclear binding energy:913.07008823 MeV (per nucleus)
8.53336531 MeV (average binding energy per nucleon)Separation energy:S_N = 5.611(10) MeV (first neutron)
S_P = 11.375(15) MeV (first proton)Half-life:3.75(5) minDecay constant λ:0.003080654135822 s^-1Specific activity α:1.750201240251 × 10⁺¹⁹ Bq g^-1
473027362.23016 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2)+Year of discovery:1951

Radioactive Decay

Half-life T_½ = 3.75(5) min (minutes) respectively 2.25 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁰⁷Rh	100 %	3.001(15) MeV

Parent Nuclides

Direct parent isotope is: ¹⁰⁷Tc.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 63) and isobaric (same nucleon number A = 107) with Ruthenium-107. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 63	Isobar A = 107
35	⁹⁸Br
36	⁹⁹Kr
37	¹⁰⁰Rb
38	¹⁰¹Sr	¹⁰⁷Sr
39	¹⁰²Y	¹⁰⁷Y
40	¹⁰³Zr	¹⁰⁷Zr
41	¹⁰⁴Nb	¹⁰⁷Nb
42	¹⁰⁵Mo	¹⁰⁷Mo
43	¹⁰⁶Tc	¹⁰⁷Tc
44	¹⁰⁷Ru	¹⁰⁷Ru
45	¹⁰⁸Rh	¹⁰⁷Rh
46	¹⁰⁹Pd	¹⁰⁷Pd
47	¹¹⁰Ag	¹⁰⁷Ag
48	¹¹¹Cd	¹⁰⁷Cd
49	¹¹²In	¹⁰⁷In
50	¹¹³Sn	¹⁰⁷Sn
51	¹¹⁴Sb	¹⁰⁷Sb
52	¹¹⁵Te	¹⁰⁷Te
53	¹¹⁶I
54	¹¹⁷Xe
55	¹¹⁸Cs
56	¹¹⁹Ba
57	¹²⁰La
58	¹²¹Ce
59	¹²²Pr