Isotopen van natrium

Het chemisch element natrium (Na), met een atoommassa van 22,98976928(2) u, kent in totaal 13 isotopen, waarvan enkel ²³Na stabiel is. ²²Na en ²⁴Na zijn de enige nog van nature aanwezige radioactieve isotopen. Alle andere isotopen kunnen alleen op kunstmatige wijze worden verkregen.

Overzicht

Nuclide	Z (p)	N (n)	Isotopische massa (u)	Halveringstijd	Radioactief verval	VP	Kernspin	Isotopische verhouding (molfractie)	Natuurlijk voorkomen (molfractie)
	Excitatie-energie
18Na	11	7	18,02597(5)	1,3(4) × 10−21 s	p (> 99,9%)	17Ne	(1−)
					β+ (< 0,1%)	18Ne
19Na	11	8	19,013877(13)	< 40 ns	p	18Ne	(5/2+)
20Na	11	9	20,007351(7)	447,9(23) ms	β+ (75%)	20Ne	2+
					β+, α (25%)	16O
21Na	11	10	20,9976552(8)	22,49(4) s	β+	21Ne	3/2+
22Na	11	11	21,9944364(4)	2,6027(10) jaar	β+	22Ne	3+	sporen
22mNa	583,03(9) keV			244(6) ns			1+
23Na	11	12	22,9897692809(29)	stabiel			3/2+	1,0000
24Na	11	13	23,99096278(8)	14,9590(12) uur	β−	24Mg	4+	sporen
24mNa	472,207(9) keV			20,20(7) ms	IT (99,95%)	24Na	1+
					β− (0,05%)	24Mg
25Na	11	14	24,9899540(13)	59,1(6) s	β−	25Mg	5/2+
26Na	11	15	25,992633(6)	1,077(5) s	β−	26Mg	3+
27Na	11	16	26,994077(4)	301(6) ms	β− (99,87%)	27Mg	5/2+
					β−, n (,13%)	26Mg
28Na	11	17	27,998938(14)	30,5(4) ms	β− (99,421%)	28Mg	1+
					β−, n (0,579%)	27Mg
29Na	11	18	29,002861(14)	44,9(12) ms	β− (74,09%)	29Mg	3/2+
					β−, n (25,91%)	28Mg
30Na	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
31Na	11	20	31,01359(23)	17,0(4) ms	β− (62,05%)	31Mg	(3/2+)
					β−, n	30Mg
					β−, 2n	29Mg
					β−, 3n	28Mg
32Na	11	21	32,02047(38)	12,9(7) ms	β−	32Mg	(3−, 4−)
					β−, n	31Mg
					β−, 2n	30Mg
33Na	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
34Na	11	23	34,03517(96)	5,5(10) ms	β−, 2n (50,0%)	32Mg	1+
					β− (35,0%)	34Mg
					β−, n (15,0%)	33Mg
35Na	11	24	35,04249(102)	1,5(5) ms	β− (> 99,9%)	35Mg	3/2+
					β−, n (< 0,1%)	34Mg
36Na	11	25	36,05148(102)	< 260 ns
37Na	11	26	37,05934(103)	1 ms [> 1,5 µs]			3/2+

Overzicht van isotopen per element

1H

2He

3Li

4Be

5B

6C

7N

8O

9F

10Ne

11Na

12Mg

13Al

14Si

15P

16S

17Cl

18Ar

19K

20Ca

21Sc

22Ti

23V

24Cr

25Mn

26Fe

27Co

28Ni

29Cu

30Zn

31Ga

32Ge

33As

34Se

35Br

36Kr

37Rb

38Sr

39Y

40Zr

41Nb

42Mo

43Tc

44Ru

45Rh

46Pd

47Ag

48Cd

49In

50Sn

51Sb

52Te

53I

54Xe

55Cs

56Ba

*

72Hf

73Ta

74W

75Re

76Os

77Ir

78Pt

79Au

80Hg

81Tl

82Pb

83Bi

84Po

85At

86Rn

87Fr

88Ra

**

104Rf

105Db

106Sg

107Bh

108Hs

109Mt

110Ds

111Rg

112Cn

113Nh

114Fl

115Mc

116Lv

117Ts

118Og

*

57La

58Ce

59Pr

60Nd

61Pm

62Sm

63Eu

64Gd

65Tb

66Dy

67Ho

68Er

69Tm

70Yb

71Lu

**

89Ac

90Th

91Pa

92U

93Np

94Pu

95Am

96Cm

97Bk

98Cf

99Es

100Fm

101Md

102No

103Lr

Bronnen, noten en/of referenties

• (en) R.B. Firestone, S.Y. Frank Chu & C.M. Baglin (1999) - Table of Isotopes (online versie van de cd-rom)
• (en) G. Audi, A.H. Wapstra, C. Thibault, J. Blachot & O. Bersillon (2003) - The NUBASE evaluation of nuclear and decay properties, Nuclear Physics A, 729, pp. 3-128
• (en) J.R. de Laeter, J.K. Böhlke, P. De Bièvre, H. Hidaka, H.S. Peiser, K.J.R. Rosman & P.D.P. Taylor (2003) - Atomic weights of the elements. Review 2000 (IUPAC Technical Report), Pure and Applied Chemistry, 75 (6), pp. 683–800
• (en) Nudat 2.5
• (en) M.E. Wieser (2006) - Atomic weights of the elements 2005 (IUPAC Technical Report), Pure and Applied Chemistry, 78 (11), pp. 2051–2066
• (en) David R. Lide (2004) - CRC Handbook of Chemistry and Physics (85th ed.), hoofdstuk 11, CRC Press - ISBN 978-0849304859