Ruthenium-116

Properties and data of the isotope ¹¹⁶Ru.

Content

General data

Name of the isotope:Ruthenium-116; Ru-116Symbol:¹¹⁶Ru or 11644RuMass number A:116 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:72Isotopic mass:115.931219(4) u (atomic weight of Ruthenium-116)Nuclide mass:115.9070827 u (calculated nuclear mass without electrons)Mass excess:-64.06909 MeVMass defect:1.03695636 u (per nucleus)Nuclear binding energy:965.9186276 MeV (per nucleus)
8.32688472 MeV (average binding energy per nucleon)Separation energy:S_N = 5.95(9) MeV (first neutron)
S_P = 15.04(79) MeV (first proton)Half-life:204(6) msDecay constant λ:3.3977802968625 s^-1Specific activity α:1.77929665728 × 10⁺²² Bq g^-1
480890988456.49 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1994

Radioactive Decay

Half-life T_½ = 204(6) ms respectively 2.04 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹¹⁶Rh		6.67(7) MeV
β^-, n	¹¹⁵Rh	?	2.09(8) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 72) and isobaric (same nucleon number A = 116) with Ruthenium-116. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 72	Isobar A = 116
40	¹¹²Zr
41	¹¹³Nb
42	¹¹⁴Mo	¹¹⁶Mo
43	¹¹⁵Tc	¹¹⁶Tc
44	¹¹⁶Ru	¹¹⁶Ru
45	¹¹⁷Rh	¹¹⁶Rh
46	¹¹⁸Pd	¹¹⁶Pd
47	¹¹⁹Ag	¹¹⁶Ag
48	¹²⁰Cd	¹¹⁶Cd
49	¹²¹In	¹¹⁶In
50	¹²²Sn	¹¹⁶Sn
51	¹²³Sb	¹¹⁶Sb
52	¹²⁴Te	¹¹⁶Te
53	¹²⁵I	¹¹⁶I
54	¹²⁶Xe	¹¹⁶Xe
55	¹²⁷Cs	¹¹⁶Cs
56	¹²⁸Ba	¹¹⁶Ba
57	¹²⁹La	¹¹⁶La
58	¹³⁰Ce
59	¹³¹Pr
60	¹³²Nd
61	¹³³Pm
62	¹³⁴Sm
63	¹³⁵Eu
64	¹³⁶Gd
65	¹³⁷Tb
66	¹³⁸Dy