Scandium-43m1

Properties and data of the isotope ⁴³Sc.

Content

General data

Name of the isotope:Scandium-43m1; Sc-43m1Symbol:⁴³Sc or 4321ScMass number A:43 (= number of nucleons)Atomic number Z:21 (= number of protons)Neutrons N:22Isotopic mass:42.9611505(20) u (atomic weight of Scandium-43m1)
Excitation energy: 151.79(8) keVNuclide mass:42.9496305 u (calculated nuclear mass without electrons)Mass excess:-36.18808 MeVMass defect:0.393803324 u (per nucleus)Nuclear binding energy:366.82543349 MeV (per nucleus)
8.53082403 MeV (average binding energy per nucleon)Half-life:438(7) μsDecay constant λ:1582.5278094976 s^-1Specific activity α:2.269096519895 × 10⁺²⁵ Bq g^-1
6.132693297015 × 10⁺¹⁴ Ci g^-1Spin and parity:
(nuclear angular momentum)3/2+Magnetic dipole moment:μ(μ_N) = + 0.348(6)Nuclear g-factor:g_l = 0.232

Radioactive Decay

Half-life T_½ = 438(7) μs respectively 4.38 × 10^-4 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁴³Sc	100 %

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
⁴³Sc		3.891(12) h	7/2-
^43m2Sc	3123.73(15) keV	472(4) ns	(19/2)-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 22) and isobaric (same nucleon number A = 43) with Scandium-43m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 22	Isobar A = 43
9	³¹F
10	³²Ne
11	³³Na
12	³⁴Mg
13	³⁵Al	⁴³Al
14	³⁶Si	⁴³Si
15	³⁷P	⁴³P
16	³⁸S	⁴³S
17	³⁹Cl	⁴³Cl
18	⁴⁰Ar	⁴³Ar
19	⁴¹K	⁴³K
20	⁴²Ca	⁴³Ca
21	⁴³Sc	⁴³Sc
22	⁴⁴Ti	⁴³Ti
23	⁴⁵V	⁴³V
24	⁴⁶Cr	⁴³Cr
25	⁴⁷Mn	⁴³Mn
26	⁴⁸Fe
27	⁴⁹Co
28	⁵⁰Ni