鈉的同位素




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主要的鈉同位素

































同位素

衰變


丰度

半衰期 (t1/2)

類型

產物

22Na

痕量
2.602 y

β+

22Neenneon-22

23Na
100%

穩定

24Na
痕量
14.96 h

β

24Mgenmagnesium-24


標準原子質量英语Standard atomic weight (Ar, 標準)

  • 22.98976928(2)[1]





←Ne(10) Mg(12)




(原子量:22.98976928(2))共有22個同位素,其中有1個是穩定的。



圖表






























































































































































































































































































































































符號
Z(p

N(n

同位素質量(u)

半衰期

衰變
方式[2][n 1]

衰變
產物[n 2]

原子核
自旋
相對豐度
(莫耳分率)
相對豐度的變化量
(莫耳分率)

激發能量

18
Na

11
7

18.02597(5)

1.3(4)×10−21 s

p (>99.9%)

17Ne
(1−)#



β+ (<.1%)

18Ne

19
Na

11
8

19.013877(13)
<40 ns
p

18Ne
(5/2+)#



20
Na

11
9

20.007351(7)
447.9(23) ms
β+ (75%)

20Ne
2+


β+, α (25%)

16O

21
Na

11
10

20.9976552(8)
22.49(4) s
β+

21Ne
3/2+



22
Na

11
11

21.9944364(4)
2.6027(10) y
β+

22Ne
3+

痕量[n 3]


22m
Na

583.03(9) keV
244(6) ns


1+



23
Na

11
12

22.9897692809(29)

稳定
3/2+

1.0000


24
Na

11
13

23.99096278(8)

14.9590(12) h

β

24Mg
4+

痕量[n 3]


24m
Na

472.207(9) keV
20.20(7) ms

IT (99.95%)

24Na
1+


β (.05%)

24Mg

25
Na

11
14

24.9899540(13)
59.1(6) s
β

25Mg
5/2+



26
Na

11
15

25.992633(6)
1.077(5) s
β

26Mg
3+



27
Na

11
16

26.994077(4)
301(6) ms
β (99.87%)

27Mg
5/2+


β, n (.13%)

26Mg

28
Na

11
17

27.998938(14)
30.5(4) ms
β (99.421%)

28Mg
1+


β, n (.579%)

27Mg

29
Na

11
18

29.002861(14)
44.9(12) ms
β (74.09%)

29Mg
3/2(+#)


β, n (25.91%)

28Mg

30
Na

11
19

30.008976(27)
48.4(17) ms
β (68.83%)

30Mg
2+


β, n (30.0%)

29Mg
β, 2n (1.17%)

28Mg
β, α

26Ne

31
Na

11
20

31.01359(23)
17.0(4) ms
β (62.05%)

31Mg
(3/2+)


β, n

30Mg
β, 2n

29Mg
β, 3n

28Mg

32
Na

11
21

32.02047(38)
12.9(7) ms
β

32Mg
(3−,4−)


β, n

31Mg
β, 2n

30Mg

33
Na

11
22

33.02672(94)
8.2(2) ms
β, n (52.0%)

32Mg
3/2+#


β (36.0%)

33Mg
β, 2n (12.0%)

31Mg

34
Na

11
23

34.03517(96)#
5.5(10) ms
β, 2n (50.0%)

32Mg
1+


β (35.0%)

34Mg
β, n (15.0%)

33Mg

35
Na

11
24

35.04249(102)#
1.5(5) ms
β (>99.9%)

35Mg
3/2+#


β, n (<.1%)

34Mg

36
Na

11
25
36.05148(102)#
<260 ns






37
Na

11
26
37.05934(103)#
1# ms [>1.5 µs]


3/2+#



備註:畫上#號的數據代表沒有經過實驗的証明,只是理論推測而已,而用括號括起來的代表數據不確定性。

















同位素列表


氖的同位素

鈉的同位素

鎂的同位素


註釋




  1. ^ Abbreviations:
    IT: 核同质异能素



  2. ^ Bold for stable isotopes


  3. ^ 3.03.1 Cosmogenic英语Cosmogenic nuclide



參考文獻





  1. ^ Meija, J.; 等. Atomic weights of the elements 2013 (IUPAC Technical Report). 纯粹与应用化学. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305. 


  2. ^ Universal Nuclide Chart. nucleonica. 需要免费注册. 




  • Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).

  • Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).

  • Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.

    • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).

    • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).

    • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.











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