Potassium-32
Properties and data of the isotope 32K.
Potassium-32 is a radioisotope of the chemical element potassium that has not yet been confirmed or experimentally observed.
Besides the element-specific 19 protons, it has 13 neutrons in its atomic nucleus; the sum of these nuclear constituents results in a mass number of 32.
See also: List of individual Potassium isotopes (and general data sources).
General data
Name of the isotope:Potassium-32; K-32Symbol:32K or 3219KMass number A:32 (= number of nucleons)Atomic number Z:19 (= number of protons)Neutrons N:13Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):0.68421052631579 (= neutron-proton ratio)Neutron excess (N-Z):-6Isotopic mass:32.02361(43) u (atomic weight of Potassium-32)Nuclide mass:32.0131872 u (calculated nuclear mass without electrons)Mass excess:21.99257 MeVMass defect:0.237709516 u (per nucleus)Nuclear binding energy:221.4249879 MeV (per nucleus)
6.91953087 MeV (average binding energy per nucleon)Half-life:Spin and parity:
(nuclear angular momentum)Mirror nucleus:Aluminium-32
Radioactive Decay
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
|---|
| p ? | | | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 13) and isobaric (same nucleon number A = 32) with Potassium-32. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 13 | Isobar A = 32 |
| 5 | 18B | |
| 6 | 19C | |
| 7 | 20N | |
| 8 | 21O | |
| 9 | 22F | |
| 10 | 23Ne | 32Ne |
| 11 | 24Na | 32Na |
| 12 | 25Mg | 32Mg |
| 13 | 26Al | 32Al |
| 14 | 27Si | 32Si |
| 15 | 28P | 32P |
| 16 | 29S | 32S |
| 17 | 30Cl | 32Cl |
| 18 | 31Ar | 32Ar |
| 19 | 32K | 32K |
External data and identifiers
Last update: 2026-01-07
Perma link: https://www.chemlin.org/isotope/potassium-32
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