Scandium-44m2
Properties and data of the isotope 44Sc.
See also: list of Scandium isotopes.
General data
Name of the isotope:Scandium-44m2; Sc-44m2Symbol:44Sc or 4421ScMass number A:44 (= number of nucleons)Atomic number Z:21 (= number of protons)Neutrons N:23Isotopic mass:43.9594029(19) u (atomic weight of Scandium-44m2)
Excitation energy: 146.1914(20) keVNuclide mass:43.9478829 u (calculated nuclear mass without electrons)Mass excess:-37.81596 MeVMass defect:0.40421584000001 u (per nucleus)Nuclear binding energy:376.52462966 MeV (per nucleus)
8.55737795 MeV (average binding energy per nucleon)Half-life:51.0(3) μsDecay constant λ:13591.12118745 s-1Specific activity α:1.903433633378 × 10+26 Bq g-1
5.144415225348 × 10+15 Ci g-1Spin and parity:
(nuclear angular momentum)0-
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 |
---|
44Sc | | 3.97(4) h | 2+ |
44m1Sc | 67.8679(14) keV | 154.8(8) ns | 1- |
44m3Sc | 271.24(1) keV | 58.61(10) h | 6+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 23) and isobaric (same nucleon number A = 44) with Scandium-44m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 23 | Isobar A = 44 |
10 | 33Ne | |
11 | 34Na | |
12 | 35Mg | |
13 | 36Al | |
14 | 37Si | 44Si |
15 | 38P | 44P |
16 | 39S | 44S |
17 | 40Cl | 44Cl |
18 | 41Ar | 44Ar |
19 | 42K | 44K |
20 | 43Ca | 44Ca |
21 | 44Sc | 44Sc |
22 | 45Ti | 44Ti |
23 | 46V | 44V |
24 | 47Cr | 44Cr |
25 | 48Mn | 44Mn |
26 | 49Fe | |
27 | 50Co | |
28 | 51Ni | |
External data and identifiers
Last update: 2020-10-13
Perma link: https://www.chemlin.org/isotope/scandium-44m2
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