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Isotopes of Neon

List, data and properties of all known isotopes of Neon.

Content
Atomic properties
Decay properties
NMR active nuclides
Radiation protection
References
Neon isotopes

Of the 19 known isotopes of neon, 3 occur as stable nuclei in nature: 20neon, 21neon and 22neon. All other isotopes of neon are unstable radionuclides, of which 24neon is the most long-lived with a half-life of almost 3.5 minutes.

 

Naturally Occurring Neon Isotopes

Atomic Mass maQuantityHalf-lifeSpin
Neon
Isotopic mixture		20,1797 u100 %
Isotope 20Ne19,99244018(2) u90,48(3) %stable0+
Isotope 21Ne20,9938467(3) u0,27(1) %stable3/2+
Isotope 22Ne21,9913851(2) u9,25(3) %stable0+

 

As with all chemical elements whose natural composition consists of several isotopes, the proportions of the individual isotopes to one another (isotope ratio) can vary to a greater or lesser extent.

 

Isotope Table: Neon

The two following tables list the most important data and properties of the Neon isotopes. Further information on the individual Neon isotopes is listed on separate pages and can be accessed via the link in column 1.

 

Atomic Properties

Isotope
Nuclide		ENAtomic Mass
[Nuclear Mass]
{Mass Excess}		Spin I
(h/2π)		Parent
123456
Neon-151510Ne515.04317(7) u
[15.0376842 u]
{40.2126 MeV}		(3/2-)
Neon-161610Ne616.025751(22) u
[16.0202652 u]
{23.9869 MeV}		0+
Neon-171710Ne717.0177140(4) u
[17.0122282 u]
{16.50048 MeV}		1/2-19Mg
Neon-181810Ne818.0057087(4) u
[18.0002229 u]
{5.31762 MeV}		0+
Neon-191910Ne919.00188090(17) u
[18.9963951 u]
{1.75205 MeV}		1/2+
Neon-202010Ne1019.99244018(2) u
[19.9869544 u]
{-7.04193 MeV}		0+20F
20Na
Neon-212110Ne1120.9938467(3) u
[20.9883609 u]
{-5.73176 MeV}		3/2+21F
21Na
Neon-222210Ne1221.9913851(2) u
[21.9858993 u]
{-8.02473 MeV}		0+22F
22Na
Neon-232310Ne1322.99446690(11) u
[22.9889811 u]
{-5.15405 MeV}		5/2+23F
Neon-242410Ne1423.9936106(5) u
[23.9881248 u]
{-5.95169 MeV}		0+24F
25F
Neon-252510Ne1524.99781(3) u
[24.9923242 u]
{-2.03997 MeV}		1/2+25F
Neon-262610Ne1626.000516(20) u
[25.9950302 u]
{0.48065 MeV}		0+26F
30Na
Neon-272710Ne1727.00757(10) u
[27.0020842 u]
{7.05141 MeV}		(3/2+)
Neon-282810Ne1828.01213(14) u
[28.0066442 u]
{11.29902 MeV}		0+
Neon-292910Ne1929.01975(16) u
[29.0142642 u]
{18.39701 MeV}		(3/2+)
Neon-303010Ne2030.02499(27) u
[30.0195042 u]
{23.27804 MeV}		0+
Neon-313110Ne2131.03347(29) u
[31.0279842 u]
{31.1771 MeV}		(3/2-)
Neon-323210Ne2232.03972(54) u
[32.0342342 u]
{36.99894 MeV}		0+
Neon-333310Ne2333.04938(64) u
[33.0438942 u]
{45.99717 MeV}
Neon-343410Ne2434.05673(55) u
[34.0512442 u]
{52.84365 MeV}		0+

 

Radioactive Decay Properties

IsotopeRadioactive DecayExtern
Half-lifeDecay ModeProbabilityEnergy
789101112
Ne-157.7(3) × 10-22 s2p 13O100 %
Ne-163.74 × 10-20 sp → 14O100 %1.411 MeVAL
Ne-17109.2(6) msEC/β+ → 17F
ε, p → 16O
ε, α → 13C		1.3 %
96.0 %
2.7 %		14.5487(4) MeV
13.909 MeV
8.691 MeV		AL
Ne-181.672(8) sβ+ → 18F100 %4.4445(6) MeVAL
Ne-1917.22(2) sβ+ → 19F100 %3.23949(16) MeVAL
Ne-20stableAL
Ne-21stableAL
Ne-22stableAL
Ne-2337.24(12) sβ- → 23Na100 %4.3758(1) MeVAL
Ne-243.38(2) minβ- → 24Na100 %2.4663(5) MeVAL
Ne-25602(8) msβ- → 25Na100 %7.322(29) MeVAL
Ne-26197(2) msβ- → 26Na
β-, n → 25Na		99.87 %
0.13(3) %		7.342(19) MeV
1.768(18) MeV		AL
Ne-2731.5(13) msβ- → 27Na
β-, n → 26Na		98 %
2.0(5) %		12.553 MeV
5.8253 MeV		AL
Ne-2820(1) msβ- → 28Na
β-, n → 27Na
β-, 2n → 26Na		84.3 %
12.0 %
3.7 %		12.29(13) MeV
8.75(13) MeV
AL
Ne-2915(3) msβ- → 29Na
β-, n → 28Na
β-, 2n → 27Na		68 %
28(5) %
4(1) %		15.72(15) MeV
11.32(15) MeV
AL
Ne-307.3(3) msβ- → 30Na
β-, n → 29Na
β-, 2n → 28Na		78.1 %
13(4) %
8.9(23) %		14.81(25) MeV
12.53(25) MeV
AL
Ne-313.4(8) msβ- → 31Na
β-, n → 30Na
β-, 2n → 29Na		100 %
?
?		18.94(27) MeV
14.64(27) MeV
AL
Ne-323.5(9) msβ- → 32Na
β-, n → 31Na		100 %
?		18.36(50) MeV
16.68(50) MeV		AL
Ne-33180 nsn ? AL
Ne-3460 nsβ- → 34Na
β-, n ? 33Na
β-, 2n ? 32Na		?
?
?

AL

 

Notes (related to the columns):

1 - name of the nuclide, isotope.
2 - E: isotope symbol with mass number (superscript; number of nucleons) and Atomic number (subscript; number of protons).
3 - N: number of neutrons.
4 - relative atomic mass of the Neon isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
5 - nuclear spin I, unit: h/2π.
6 - source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.

7 - isotope notation in short form.
8 - decay: half-live of the Neon isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
9 - decay mode: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
10 - decay probability in percent (%).
11 - decay energy; Particle energy related to decay type.
12 - other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

NMR active Neon nuclides

Nuclide
quantity 1)
spin		Nuclear
magnetic
moment
μ/μN		Gyromagnetic ratio
{Quadrupole moment}		Resonant
frequency
v0 bei 1 T		Relative
sensitivity
H0 = const.
v0 = const. 3)
21Ne
0,27(1) %
3/2+		-0,66170(3)- 2,113
{+ 0,10155(75)}		3,36310,00246
0,3949

1) Quantity Percentage of natural occurrence.

2) Gyromagnetic ratio: 107 rad T-1 s-1
    Quadrupole moment: Q [barn] = [100 fm2]

3) Related to 1H = 1,000.

 

Radiation Protection

According to the Radiation Protection Ordinance (StrlSchV 2018, Germany), the following values (columns 1 to 7) apply to the handling of Neon radionuclides:

NuclideLimit ValueHASS limitSCDaughter NuclidesHalf-life
Ne-19109 Bq100 Bq/g< 10 min

(HASS = High-Activity Sealed Radioactive Sources; SC = surface contamination)

 

Literature Sources and References

Properties of the Neon nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Neon: NMR properties - 21Ne-NMR

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

 

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Last update: 2022-12-28

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