Potassium-35
Properties and data of the isotope 35K.
See also: list of Potassium isotopes.
General data
Name of the isotope:Potassium-35; K-35Symbol:35K or 3519KMass number A:35 (= number of nucleons)Atomic number Z:19 (= number of protons)Neutrons N:16Isotopic mass:34.9880054(6) u (atomic weight of Potassium-35)Nuclide mass:34.9775826 u (calculated nuclear mass without electrons)Mass excess:-11.1729 MeVMass defect:0.299308864 u (per nucleus)Nuclear binding energy:278.80441096 MeV (per nucleus)
7.96584031 MeV (average binding energy per nucleon)Separation energy:SN = 18.02(20) MeV (first neutron)
SP = 0.0836(5) MeV (first proton)Half-life:178(8) msDecay constant λ:3.8940852840446 s-1Specific activity α:6.89727355915 × 10+22 Bq g-1
1864127988960.5 Ci g-1Spin and parity:
(nuclear angular momentum)(3/2)+Magnetic dipole moment:μ(μN) = (+) 0.392(7)Mirror nucleus:Sulfur-35Year of discovery:1976
Radioactive Decay
Half-life T½ = 178(8) ms respectively 1.78 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β+; | 35Ar | 99.63(15) % | 11.8744(9) MeV | |
β+, p; | 34Cl | 0.37(15) % | 5.982 MeV | |
Parent Nuclides
Direct parent isotope is: 35Ca.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 16) and isobaric (same nucleon number A = 35) with Potassium-35. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 16 | Isobar A = 35 |
5 | 21B | |
6 | 22C | |
7 | 23N | |
8 | 24O | |
9 | 25F | |
10 | 26Ne | |
11 | 27Na | 35Na |
12 | 28Mg | 35Mg |
13 | 29Al | 35Al |
14 | 30Si | 35Si |
15 | 31P | 35P |
16 | 32S | 35S |
17 | 33Cl | 35Cl |
18 | 34Ar | 35Ar |
19 | 35K | 35K |
20 | 36Ca | 35Ca |
21 | 37Sc | |
22 | 38Ti | |
External data and identifiers
Literature and References
[1] - S. I. Sukhoruchkin, Z. N. Soroko:
Energy levels for K-35 (Potassium-35).
In: Landolt-Börnstein - Group I Elementary Particles, Nuclei and Atoms, (2008), DOI 10.1007/978-3-540-75278-3_113.
Last update: 2023-10-04
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