Potassium-34

Properties and data of the isotope ³⁴K.

Content

General data

Name of the isotope:Potassium-34; K-34Symbol:³⁴K or 3419KMass number A:34 (= number of nucleons)Atomic number Z:19 (= number of protons)Neutrons N:15Isotopic mass:33.99869(21) u (atomic weight of Potassium-34)Nuclide mass:33.9882672 u (calculated nuclear mass without electrons)Mass excess:-1.22026 MeVMass defect:0.279959348 u (per nucleus)Nuclear binding energy:260.78045291 MeV (per nucleus)
7.67001332 MeV (average binding energy per nucleon)Separation energy:S_N = 16.33(28) MeV (first neutron)Half-life:25 nsDecay constant λ:27725887.222398 s^-1Specific activity α:5.059672676363 × 10⁺²⁹ Bq g^-1
1.367479101719 × 10⁺¹⁹ Ci g^-1Spin and parity:
(nuclear angular momentum)(1+)Mirror nucleus:Phosphorus-34

Radioactive Decay

Half-life T_½ = 25 ns respectively 2.5 × 10^-8 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
p	³³Ar	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 15) and isobaric (same nucleon number A = 34) with Potassium-34. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 15	Isobar A = 34
5	²⁰B
6	²¹C
7	²²N
8	²³O
9	²⁴F
10	²⁵Ne	³⁴Ne
11	²⁶Na	³⁴Na
12	²⁷Mg	³⁴Mg
13	²⁸Al	³⁴Al
14	²⁹Si	³⁴Si
15	³⁰P	³⁴P
16	³¹S	³⁴S
17	³²Cl	³⁴Cl
18	³³Ar	³⁴Ar
19	³⁴K	³⁴K
20	³⁵Ca	³⁴Ca
21	³⁶Sc