Scandium-48

Properties and data of the isotope ⁴⁸Sc.

Contents

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

General data

Name of the isotope:Scandium-48; Sc-48Symbol:⁴⁸Sc or 4821ScMass number A:48 (= number of nucleons)Atomic number Z:21 (= number of protons)Neutrons N:27Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.2857142857143 (= neutron-proton ratio)Neutron excess (N-Z):6Isotopic mass:47.952231(6) u (atomic weight of Scandium-48)Nuclide mass:47.940711 u (calculated nuclear mass without electrons)Mass excess:-44.49654 MeVMass defect:0.44604740400001 u (per nucleus)Nuclear binding energy:415.49048054 MeV (per nucleus)
8.65605168 MeV (average binding energy per nucleon)Separation energy:S_N = 8.239(5) MeV (first neutron)
S_P = 9.448(5) MeV (first proton)Half-life:43.67(9) hDecay constant λ:4.408996645039 × 10^-6 s^-1Specific activity α:5.649276350514 × 10⁺¹⁶ Bq g^-1
1526831.4460849 Ci g^-1Spin and parity:
(nuclear angular momentum)6+Magnetic dipole moment:μ(μ_N) = 3.737(12)Nuclear g-factor:g_l = 0.62283333333333Mirror nucleus:Cobalt-48Year of discovery:1937

Radioactive Decay

Half-life T_½ = 43.67(9) h (hours) respectively 1.57212 × 10⁵ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁴⁸Ti	100 %	3.989(5) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 27) and isobaric (same nucleon number A = 48) with Scandium-48. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 27	Isobar A = 48
11	³⁸Na
12	³⁹Mg
13	⁴⁰Al
14	⁴¹Si
15	⁴²P
16	⁴³S	⁴⁸S
17	⁴⁴Cl	⁴⁸Cl
18	⁴⁵Ar	⁴⁸Ar
19	⁴⁶K	⁴⁸K
20	⁴⁷Ca	⁴⁸Ca
21	⁴⁸Sc	⁴⁸Sc
22	⁴⁹Ti	⁴⁸Ti
23	⁵⁰V	⁴⁸V
24	⁵¹Cr	⁴⁸Cr
25	⁵²Mn	⁴⁸Mn
26	⁵³Fe	⁴⁸Fe
27	⁵⁴Co	⁴⁸Co
28	⁵⁵Ni	⁴⁸Ni
29	⁵⁶Cu
30	⁵⁷Zn
31	⁵⁸Ga
32	⁵⁹Ge