Potassium-43m
Properties and data of the isotope 43K.
See also: list of Potassium isotopes.
General data
Name of the isotope:Potassium-43m; K-43mSymbol:43K or 4319KMass number A:43 (= number of nucleons)Atomic number Z:19 (= number of protons)Neutrons N:24Isotopic mass:42.9607347(4) u (atomic weight of Potassium-43m)
Excitation energy: 738.30(6) keVNuclide mass:42.9503119 u (calculated nuclear mass without electrons)Mass excess:-36.57539 MeVMass defect:0.395898892 u (per nucleus)Nuclear binding energy:368.7774425 MeV (per nucleus)
8.57621959 MeV (average binding energy per nucleon)Half-life:200(5) nsDecay constant λ:3465735.9027997 s-1Specific activity α:4.969321378571 × 10+28 Bq g-1
1.343059832046 × 10+18 Ci g-1Spin and parity:
(nuclear angular momentum)7/2-Magnetic dipole moment:μ(μN) = + 4.43(5)Nuclear g-factor:gl = 1.2657142857143
Radioactive Decay
Half-life T½ = 200(5) ns respectively 2.00 × 10-7 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
Iso | 43K | | | |
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 |
---|
43K | | 22.3(1) h | 3/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 24) and isobaric (same nucleon number A = 43) with Potassium-43m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 24 | Isobar A = 43 |
10 | 34Ne | |
11 | 35Na | |
12 | 36Mg | |
13 | 37Al | 43Al |
14 | 38Si | 43Si |
15 | 39P | 43P |
16 | 40S | 43S |
17 | 41Cl | 43Cl |
18 | 42Ar | 43Ar |
19 | 43K | 43K |
20 | 44Ca | 43Ca |
21 | 45Sc | 43Sc |
22 | 46Ti | 43Ti |
23 | 47V | 43V |
24 | 48Cr | 43Cr |
25 | 49Mn | 43Mn |
26 | 50Fe | |
27 | 51Co | |
28 | 52Ni | |
29 | 53Cu | |
30 | 54Zn | |
Last update: 2020-10-12
Perma link: https://www.chemlin.org/isotope/potassium-43m
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