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A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
Nuclides with atomic number of 18 but with different mass numbers
Argon (18 Ar ) has 26 known isotopes , from 29 54 isomer (32m Ar ), of which three are stable (36 38 40 Ar ). On the Earth, 40 39 42 37 29 4 × 10 −20 [4]
The naturally occurring 40 K half-life of 1.248× 10 9 40 electron capture (10.72%) and by positron emission (0.001%), and also transforms to stable 40 beta decay (89.28%). These properties and ratios are used to determine the age of rocks through potassium–argon dating .[5]
Despite the trapping of 40 40 40 38 36 36 38 40 outer planets is measured to be 8400:1600:1.[6]
In the Earth's atmosphere , radioactive 39 8 ) years) is made by cosmic ray activity, primarily from 40 neutron capture by 39 alpha emission by calcium . The content of 39 −16 g/g, or (1.01±0.08) Bq/kg of 36, 38, 40 Ar.[7] 42 −21 parts per part of 36, 38, 40 Ar.[8] cosmogenic isotopes , known as depleted argon.[9] chlorine ) while heavier ones decay to potassium .
36 argon hydride , was detected in the Crab Nebula supernova remnant during 2013.[10] [11] noble molecule was detected in outer space .[10] [11]
37 neutron capture of 40 alpha particle emission, as a result of subsurface nuclear explosions . It has a half-life of 35 days.[5]
List of isotopes [ edit ]
Nuclide[12] [n 1]
Z N Isotopic mass (Da [13] [n 2] [n 3] Half-life Decay [n 4] Daughter [n 5] Spin andparity [n 6] [n 7] Natural abundance (mole fraction)
Excitation energy
Normal proportion
Range of variation
29 Ar [4] 18 11
~40 zs
2p
27 S
30 Ar 18 12 30.02247(22 )
<10 ps
2p
28 S 0+
31 Ar 18 13 31.01216(22 )#
15.1(3 ) ms
β+ , p (68.3%)
30 S 5/2+
β+ (22.63%)
31 Cl
β+ , 2p (9.0%)
29 P
β+ , 3p (0.07%)
28 Si
32 Ar 18 14 31.9976378(19 )
98(2 ) ms
β+ (64.42%)
32 Cl 0+
β+ , p (35.58%)
31 S
32m Ar 5600(100) keV
unknown
5−#
33 Ar 18 15 32.9899255(4 )
173.0(20 ) ms
β+ (61.3%)
33 Cl 1/2+
β+ , p (38.7%)
32 S
34 Ar 18 16 33.98027009(8 )
843.8(4 ) ms
β+
34 Cl 0+
35 Ar 18 17 34.9752577(7 )
1.7756(10 ) s
β+
35 Cl 3/2+
36 Ar 18 18 35.967545105(29 )
Observationally Stable [n 8] 0+
0.003336(4 )
37 Ar 18 19 36.96677631(22 )
35.011(19 ) d
EC 37 Cl 3/2+
Trace[n 9]
38 Ar 18 20 37.96273210(21 )
Stable
0+
0.000629(1 )
39 Ar [n 10] 18 21 38.964313(5 )
+3.1 y [14] β−
39 K 7/2−
Trace[n 9]
40 Ar [n 11] 18 22 39.9623831238(24 )
Stable
0+
0.996035(4 )[n 12]
41 Ar 18 23 40.9645006(4 )
109.61(4 ) min
β−
41 K 7/2−
Trace[n 9]
42 Ar 18 24 41.963046(6 )
32.9(11 ) y
β−
42 K 0+
43 Ar 18 25 42.965636(6 )
5.37(6 ) min
β−
43 K 5/2(−)
44 Ar 18 26 43.9649238(17 )
11.87(5 ) min
β−
44 K 0+
45 Ar 18 27 44.9680397(6 )
21.48(15 ) s
β−
45 K (5/2,7/2)−
46 Ar 18 28 45.9680374(12 )
8.4(6 ) s
β−
46 K 0+
47 Ar 18 29 46.9727681(12 )
1.23(3 ) s
β− (99.8%)
47 K (3/2−)
β− , n
46 K
48 Ar 18 30 47.97608(33 )
415(15 ) ms
β−
48 K 0+
49 Ar 18 31 48.98155(43 )#
236(8 ) ms
β−
49 K 3/2−#
50 Ar 18 32 49.98569(54 )#
106(6 ) ms
β−
50 K 0+
51 Ar 18 33 50.99280(64 )#
60# ms [>200 ns ]
β−
51 K 3/2−#
52 Ar 18 34 51.99863(64 )#
10# ms
β−
52 K 0+
53 Ar 18 35 53.00729(75 )#
3# ms
β−
53 K (5/2−)#
β− , n
52 K
54 Ar [15] 18 36
β−
54 K 0+
This table header & footer:
^ ( ) – Uncertainty (1 σ ) 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:
^ Bold symbol as daughter – Daughter product is stable.
^ ( ) spin value – Indicates spin with weak assignment arguments.
^ # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
^ Believed to undergo double electron capture to 36 S
^ a b c Cosmogenic nuclide
^ Used in argon–argon dating
^ Used in argon–argon dating and potassium–argon dating
^ Generated from 40 36
References [ edit ]
^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (4 May 2022). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)" . Pure and Applied Chemistry . doi :10.1515/pac-2019-0603 . ISSN 1365-3075 .
^ a b Mukha, I.; et al. (2018). "Deep excursion beyond the proton dripline. I. Argon and chlorine isotope chains". Physical Review C . 98 6 ): 064308–1–064308–13. arXiv :1803.10951 Bibcode :2018PhRvC..98f4308M . doi :10.1103/PhysRevC.98.064308 . S2CID 119384311 .
^ a b
"40 39 . Archived from the original on 9 May 2007. Retrieved 7 March 2007 .
^ Cameron, A.G.W. (1973). "Elemental and isotopic abundances of the volatile elements in the outer planets". Space Science Reviews . 14 Bibcode :1973SSRv...14..392C . doi :10.1007/BF00214750 . S2CID 119861943 .
^
P. Benetti; et al. (2007). "Measurement of the specific activity of 39 Nuclear Instruments and Methods A 574 (1 ): 83–88. arXiv :astro-ph/0603131 Bibcode :2007NIMPA.574...83B . doi :10.1016/j.nima.2007.01.106 . S2CID 17073444 .
^
V. D. Ashitkov; et al. (1998). "New experimental limit on the 42 Nuclear Instruments and Methods A 416 (1 ): 179–181. Bibcode :1998NIMPA.416..179A . doi :10.1016/S0168-9002(98 )00740-2 .
^
H. O. Back; et al. (2012). "Depleted Argon from Underground Sources" . Physics Procedia 37 Bibcode :2012PhPro..37.1105B . doi :10.1016/j.phpro.2012.04.099
^ a b Quenqua, Douglas (13 December 2013). "Noble Molecules Found in Space" . The New York Times . Retrieved 13 December 2013 .
^ a b
Barlow, M. J.; et al. (2013). "Detection of a Noble Gas Molecular Ion, 36 Science 342 (6164): 1343–1345. arXiv :1312.4843 Bibcode :2013Sci...342.1343B . doi :10.1126/science.1243582 . PMID 24337290 . S2CID 37578581 .
^ Half-life, decay mode, nuclear spin, and isotopic composition is sourced in:Audi, G.; Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S. (2017). "The NUBASE2016 evaluation of nuclear properties" (PDF) . Chinese Physics C . 41 3 ): 030001. Bibcode :2017ChPhC..41c0001A . doi :10.1088/1674-1137/41/3/030001 .
^ Wang, M.; Audi, G.; Kondev, F. G.; Huang, W. J.; Naimi, S.; Xu, X. (2017). "The AME2016 atomic mass evaluation (II ). Tables, graphs, and references" (PDF) . Chinese Physics C . 41 3 ): 030003-1–030003-442. doi :10.1088/1674-1137/41/3/030003 .
^ Golovko, Victor V. (15 October 2023). "Application of the most frequent value method for 39 The European Physical Journal C . 83 10 ). arXiv :2310.06867 doi :10.1140/epjc/s10052-023-12113-6 . ISSN 1434-6052 .
^ Neufcourt, L.; Cao, Y.; Nazarewicz, W.; Olsen, E.; Viens, F. (2019). "Neutron drip line in the Ca region from Bayesian model averaging". Physical Review Letters . 122 (6 ): 062502–1–062502–6. arXiv :1901.07632 Bibcode :2019PhRvL.122f2502N . doi :10.1103/PhysRevLett.122.062502 . PMID 30822058 . S2CID 73508148 .
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Isotopes_of_argon&oldid=1226643312 " C a t e g o r i e s : ● I s o t o p e s o f a r g o n ● A r g o n ● L i s t s o f i s o t o p e s b y e l e m e n t H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● U s e d m y d a t e s f r o m J u l y 2 0 2 0 ● A r t i c l e s w i t h G N D i d e n t i f i e r s ● A r t i c l e s w i t h J 9 U i d e n t i f i e r s ● A r t i c l e s w i t h L C C N i d e n t i f i e r s
● T h i s p a g e w a s l a s t e d i t e d o n 3 1 M a y 2 0 2 4 , a t 2 3 : 5 9 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
