Scandium-59

Properties and data of the isotope ⁵⁹Sc.

Content

General data

Name of the isotope:Scandium-59; Sc-59Symbol:⁵⁹Sc or 5921ScMass number A:59 (= number of nucleons)Atomic number Z:21 (= number of protons)Neutrons N:38Isotopic mass:58.98922(97) u (atomic weight of Scandium-59)Nuclide mass:58.9777 u (calculated nuclear mass without electrons)Mass excess:-10.04151 MeVMass defect:0.50437248 u (per nucleus)Nuclear binding energy:469.81993889 MeV (per nucleus)
7.96304981 MeV (average binding energy per nucleon)Separation energy:S_N = 3.50(56) MeV (first neutron)
S_P = 15.67(64) MeV (first proton)Half-life:10 msDecay constant λ:69.314718055995 s^-1Specific activity α:7.196948203448 × 10⁺²³ Bq g^-1
19451211360671 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Year of discovery:2009

Radioactive Decay

Half-life T_½ = 10 ms respectively 1.0 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁵⁹Ti	100 %	15.21(45) MeV
β^-, n	⁵⁸Ti	?	12.74(45) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 38) and isobaric (same nucleon number A = 59) with Scandium-59. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 38	Isobar A = 59
20	⁵⁸Ca
21	⁵⁹Sc	⁵⁹Sc
22	⁶⁰Ti	⁵⁹Ti
23	⁶¹V	⁵⁹V
24	⁶²Cr	⁵⁹Cr
25	⁶³Mn	⁵⁹Mn
26	⁶⁴Fe	⁵⁹Fe
27	⁶⁵Co	⁵⁹Co
28	⁶⁶Ni	⁵⁹Ni
29	⁶⁷Cu	⁵⁹Cu
30	⁶⁸Zn	⁵⁹Zn
31	⁶⁹Ga	⁵⁹Ga
32	⁷⁰Ge	⁵⁹Ge
33	⁷¹As
34	⁷²Se
35	⁷³Br
36	⁷⁴Kr
37	⁷⁵Rb
38	⁷⁶Sr
39	⁷⁷Y
40	⁷⁸Zr