Neon-33

Properties and data of the isotope ³³Ne.

Contents

Neon-33 is a hypothetical radioisotope of the chemical element neon, which has 23 neutrons in its atomic nucleus in addition to the element-specific 10 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 33. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of ³³Ne is exclusively for academic purposes.

Despite experiments already carried out to produce the radioactive nuclide, ³³Ne has not yet been observed! The following data are based on theoretical calculations.

See also: List of individual Neon isotopes (and general data sources).

General data

Name of the isotope:Neon-33; Ne-33Symbol:³³Ne or 3310NeMass number A:33 (= number of nucleons)Atomic number Z:10 (= number of protons)Neutrons N:23Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):2.3 (= neutron-proton ratio)Neutron excess (N-Z):13Isotopic mass:33049520(640) u (atomic weight of Neon-33)Nuclide mass:33049519.994514 u (calculated nuclear mass without electrons)Mass excess:30785398843.578 MeVMass defect:-33049486.722457 u (per nucleus)Nuclear binding energy:-30785398585.048 MeV (per nucleus)
-932890866.21358 MeV (average binding energy per nucleon)Half-life:<180 nsDecay constant λ:3850817.6697775 s^-1Specific activity α:7.016793718436 × 10⁺²² Bq g^-1
1896430734712.5 Ci g^-1Spin and parity:
(nuclear angular momentum)

Radioactive Decay

Half-life T_½ = <180 ns respectively 1.80 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
n ?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 23) and isobaric (same nucleon number A = 33) with Neon-33. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 23	Isobar A = 33
10	³³Ne	³³Ne
11	³⁴Na	³³Na
12	³⁵Mg	³³Mg
13	³⁶Al	³³Al
14	³⁷Si	³³Si
15	³⁸P	³³P
16	³⁹S	³³S
17	⁴⁰Cl	³³Cl
18	⁴¹Ar	³³Ar
19	⁴²K	³³K
20	⁴³Ca
21	⁴⁴Sc
22	⁴⁵Ti
23	⁴⁶V
24	⁴⁷Cr
25	⁴⁸Mn
26	⁴⁹Fe
27	⁵⁰Co
28	⁵¹Ni