Strontium-106

Properties and data of the isotope ¹⁰⁶Sr.

Contents

General data

Name of the isotope:Strontium-106; Sr-106Symbol:¹⁰⁶Sr or 10638SrMass number A:106 (= number of nucleons)Atomic number Z:38 (= number of protons)Neutrons N:68Isotopic mass:105.96265(64) u (atomic weight of Strontium-106)Nuclide mass:105.9418048 u (calculated nuclear mass without electrons)Mass excess:-34.7913 MeVMass defect:0.92391550400001 u (per nucleus)Nuclear binding energy:860.62174848 MeV (per nucleus)
8.1190731 MeV (average binding energy per nucleon)Separation energy:S_N = 4.25(78) MeV (first neutron)Half-life:20 msDecay constant λ:34.657359027997 s^-1Specific activity α:1.987728551428 × 10⁺²³ Bq g^-1
5372239328185.4 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2010

Radioactive Decay

Half-life T_½ = 20 ms respectively 2.0 × 10^-2 seconds s.

Decay mode	Daughter	Decay energy
β^-	¹⁰⁶Y	11.26(78) MeV
β^-, n	¹⁰⁵Y	8.41(146) MeV
β^-, 2n	¹⁰⁴Y

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 68) and isobaric (same nucleon number A = 106) with Strontium-106. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 68	Isobar A = 106
38	¹⁰⁶Sr	¹⁰⁶Sr
39	¹⁰⁷Y	¹⁰⁶Y
40	¹⁰⁸Zr	¹⁰⁶Zr
41	¹⁰⁹Nb	¹⁰⁶Nb
42	¹¹⁰Mo	¹⁰⁶Mo
43	¹¹¹Tc	¹⁰⁶Tc
44	¹¹²Ru	¹⁰⁶Ru
45	¹¹³Rh	¹⁰⁶Rh
46	¹¹⁴Pd	¹⁰⁶Pd
47	¹¹⁵Ag	¹⁰⁶Ag
48	¹¹⁶Cd	¹⁰⁶Cd
49	¹¹⁷In	¹⁰⁶In
50	¹¹⁸Sn	¹⁰⁶Sn
51	¹¹⁹Sb	¹⁰⁶Sb
52	¹²⁰Te	¹⁰⁶Te
53	¹²¹I
54	¹²²Xe
55	¹²³Cs
56	¹²⁴Ba
57	¹²⁵La
58	¹²⁶Ce
59	¹²⁷Pr
60	¹²⁸Nd
61	¹²⁹Pm
62	¹³⁰Sm
63	¹³¹Eu