Isotopes of neon
From Wikipedia, the free encyclopedia
Neon (10Ne) naturally occurs as three stable isotopes: 20
Ne, 21
Ne, and 22
Ne. Their stated natural abundances are those measured in air.
In addition, 17 artificial radioisotopes have been discovered, ranging from 15
Ne to 34
Ne, all short-lived: the most stable is 24
Ne with a half-life of 3.38 minutes. All others are under a minute, and most under a second. The isotopes lighter than the stable ones usually decay to fluorine or oxygen, while heavier ones decay to sodium.
List of isotopes
| Nuclide [n 1] |
Z | N | Isotopic mass (Da)[4] [n 2][n 3] |
Half-life[1] [resonance width] |
Decay mode[1] [n 4] |
Daughter isotope [n 5] |
Spin and parity[1] [n 6] |
Natural abundance (mole fraction) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Excitation energy | Normal proportion[1] | Range of variation | |||||||||||||||||
| 15 Ne[5] |
10 | 5 | 15.043170(70) | 770(300) ys [590(230) keV] |
2p | 13 O |
(3/2−) | ||||||||||||
| 16 Ne |
10 | 6 | 16.025751(22) | > 5.7 zs [< 80 keV] |
2p | 14 O |
0+ | ||||||||||||
| 17 Ne[n 7] |
10 | 7 | 17.0177140(4) | 109.2(6) ms | β+p (94.4(2.9)%) | 16 O |
1/2− | ||||||||||||
| β+α (3.51(1)%) | 13 N | ||||||||||||||||||
| β+ (2.1(2.9)%) | 17 F | ||||||||||||||||||
| β+pα (0.014(4)%) | 12 C | ||||||||||||||||||
| 18 Ne |
10 | 8 | 18.0057087(4) | 1.66420(47) s | β+ | 18 F |
0+ | ||||||||||||
| 19 Ne |
10 | 9 | 19.00188091(17) | 17.2569(19) s | β+ | 19 F |
1/2+ | ||||||||||||
| 20 Ne |
10 | 10 | 19.9924401753(16) | Stable | 0+ | 0.9048(3) | [0.8847, 0.9051][6] | ||||||||||||
| 21 Ne |
10 | 11 | 20.99384669(4) | Stable | 3/2+ | 0.0027(1) | [0.0027, 0.0171][6] | ||||||||||||
| 22 Ne |
10 | 12 | 21.991385114(19) | Stable | 0+ | 0.0925(3) | [0.0920, 0.0996][6] | ||||||||||||
| 23 Ne |
10 | 13 | 22.99446691(11) | 37.15(3) s | β− | 23 Na |
5/2+ | ||||||||||||
| 24 Ne |
10 | 14 | 23.9936106(6) | 3.38(2) min | β− | 24 Na |
0+ | ||||||||||||
| 25 Ne |
10 | 15 | 24.997810(30) | 602(8) ms | β− | 25 Na |
1/2+ | ||||||||||||
| 26 Ne |
10 | 16 | 26.000516(20) | 197(2) ms | β− (99.87(3)%) | 26 Na |
0+ | ||||||||||||
| β−n (0.13(3)%) | 25 Na | ||||||||||||||||||
| 27 Ne |
10 | 17 | 27.007570(100) | 30.9(1.1) ms | β− (98.0(5)%) | 27 Na |
(3/2+) | ||||||||||||
| β−n (2.0(5)%) | 26 Na | ||||||||||||||||||
| β−2n ? | 25 Na ? | ||||||||||||||||||
| 28 Ne |
10 | 18 | 28.012130(140) | 18.8(2) ms | β− (84.3(1.1)%) | 28 Na |
0+ | ||||||||||||
| β−n (12(1)%) | 27 Na | ||||||||||||||||||
| β−2n (3.7(5)%) | 26 Na | ||||||||||||||||||
| 29 Ne |
10 | 19 | 29.019750(160) | 14.7(4) ms | β− (68.0(5.1)%) | 29 Na |
(3/2−) | ||||||||||||
| β−n (28(5)%) | 28 Na | ||||||||||||||||||
| β−2n (4(1)%) | 27 Na | ||||||||||||||||||
| 30 Ne |
10 | 20 | 30.024990(270) | 7.22(18) ms | β− (78.1(4.6)%) | 30 Na |
0+ | ||||||||||||
| β−n (13(4)%) | 29 Na | ||||||||||||||||||
| β−2n (8.9(2.3)%) | 28 Na | ||||||||||||||||||
| 31 Ne |
10 | 21 | 31.033470(290) | 3.4(8) ms | β− | 31 Na |
(3/2−) | ||||||||||||
| β−n ? | 30 Na ? | ||||||||||||||||||
| β−2n ? | 29 Na ? | ||||||||||||||||||
| 32 Ne |
10 | 22 | 32.039720(540)# | 3.5(9) ms | β− | 32 Na |
0+ | ||||||||||||
| β−n ? | 31 Na ? | ||||||||||||||||||
| β−2n ? | 30 Na ? | ||||||||||||||||||
| 34 Ne |
10 | 24 | 34.056730(550)# | 2 ms# [> 1.5 μs] | β− ? | 34 Na |
0+ | ||||||||||||
| β−2n ? | 32 Na ? | ||||||||||||||||||
| β−n ? | 33 Na ? | ||||||||||||||||||
| This table header & footer: | |||||||||||||||||||
- mNe – Excited nuclear isomer.
- ( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
- # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
- Modes of decay:
n: Neutron emission p: Proton emission - Bold symbol as daughter – Daughter product is stable.
- ( ) spin value – Indicates spin with weak assignment arguments.
See also
Daughter products other than neon