Scandium-58

Properties and data of the isotope ⁵⁸Sc.

Content

General data

Name of the isotope:Scandium-58; Sc-58Symbol:⁵⁸Sc or 5821ScMass number A:58 (= number of nucleons)Atomic number Z:21 (= number of protons)Neutrons N:37Isotopic mass:57.98403(43) u (atomic weight of Scandium-58)Nuclide mass:57.97251 u (calculated nuclear mass without electrons)Mass excess:-14.87596 MeVMass defect:0.50089756400001 u (per nucleus)Nuclear binding energy:466.58307548 MeV (per nucleus)
8.04453578 MeV (average binding energy per nucleon)Separation energy:S_N = 1.95(136) MeV (first neutron)
S_P = 15.29(56) MeV (first proton)Half-life:12(5) msDecay constant λ:57.762265046662 s^-1Specific activity α:6.10267537719 × 10⁺²³ Bq g^-1
16493717235657 Ci g^-1Spin and parity:
(nuclear angular momentum)(3+)Year of discovery:1997

Radioactive Decay

Half-life T_½ = 12(5) ms respectively 1.2 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁵⁸Ti	100 %	16.23(45) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 37) and isobaric (same nucleon number A = 58) with Scandium-58. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 37	Isobar A = 58
19	⁵⁶K
20	⁵⁷Ca	⁵⁸Ca
21	⁵⁸Sc	⁵⁸Sc
22	⁵⁹Ti	⁵⁸Ti
23	⁶⁰V	⁵⁸V
24	⁶¹Cr	⁵⁸Cr
25	⁶²Mn	⁵⁸Mn
26	⁶³Fe	⁵⁸Fe
27	⁶⁴Co	⁵⁸Co
28	⁶⁵Ni	⁵⁸Ni
29	⁶⁶Cu	⁵⁸Cu
30	⁶⁷Zn	⁵⁸Zn
31	⁶⁸Ga	⁵⁸Ga
32	⁶⁹Ge
33	⁷⁰As
34	⁷¹Se
35	⁷²Br
36	⁷³Kr
37	⁷⁴Rb
38	⁷⁵Sr
39	⁷⁶Y
40	⁷⁷Zr