Strontium-102

Properties and data of the isotope ¹⁰²Sr.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Strontium-102; Sr-102Symbol:¹⁰²Sr or 10238SrMass number A:102 (= number of nucleons)Atomic number Z:38 (= number of protons)Neutrons N:64Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.6842105263158 (= neutron-proton ratio)Neutron excess (N-Z):26Isotopic mass:101.94400(7) u (atomic weight of Strontium-102)Nuclide mass:101.9231548 u (calculated nuclear mass without electrons)Mass excess:-52.16366 MeVMass defect:0.90790584 u (per nucleus)Nuclear binding energy:845.70884252 MeV (per nucleus)
8.29126316 MeV (average binding energy per nucleon)Separation energy:S_N = 4.91(7) MeV (first neutron)
S_P = 16.60(21) MeV (first proton)Half-life:69(6) msDecay constant λ:10.045611312463 s^-1Specific activity α:5.989711519586 × 10⁺²² Bq g^-1
1618840951239.6 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1986

Radioactive Decay

Half-life T_½ = 69(6) ms respectively 6.9 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁰²Y	94.5 %	9.01(7) MeV
β^-, n	¹⁰¹Y	5.5(15) %	4.83(7) MeV

Parent Nuclides

Direct parent isotope is: ¹⁰²Rb.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 64) and isobaric (same nucleon number A = 102) with Strontium-102. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 64	Isobar A = 102
36	¹⁰⁰Kr
37	¹⁰¹Rb	¹⁰²Rb
38	¹⁰²Sr	¹⁰²Sr
39	¹⁰³Y	¹⁰²Y
40	¹⁰⁴Zr	¹⁰²Zr
41	¹⁰⁵Nb	¹⁰²Nb
42	¹⁰⁶Mo	¹⁰²Mo
43	¹⁰⁷Tc	¹⁰²Tc
44	¹⁰⁸Ru	¹⁰²Ru
45	¹⁰⁹Rh	¹⁰²Rh
46	¹¹⁰Pd	¹⁰²Pd
47	¹¹¹Ag	¹⁰²Ag
48	¹¹²Cd	¹⁰²Cd
49	¹¹³In	¹⁰²In
50	¹¹⁴Sn	¹⁰²Sn
51	¹¹⁵Sb
52	¹¹⁶Te
53	¹¹⁷I
54	¹¹⁸Xe
55	¹¹⁹Cs
56	¹²⁰Ba
57	¹²¹La
58	¹²²Ce
59	¹²³Pr
60	¹²⁴Nd