ATOMIC ELEMENT REFERENCE TABLES

When it comes to the truth about radiation and health effects, there are no experts who are honest - not in government, not in science, not anywhere. Yet, people would rather listen to liars than challenge their assumptions about the sources of the so-called truth and disregard the purveyors of actual truth on this topic: the non-creditialed self-taught. - Andrew Kishner, May 18, 2013

The following values apply to elements as they exist in materials of terrestrial origin and to certain artificial elements. When used with the footnotes, they are reliable to ± 1 in the last digit, or ± 3 if that digit is in small type.

	Symbol	Atomic number	Atomic weight	Melting point, °C	Boiling point, °C

Actinium ^k	Ac	89	227.028	1.050	3,200 ± 300
�Aluminum	Al	13	26.98154 ^b	660.37	2,467
�Americium	Am	95	(243)	994 ± 4	2,607
�Antimony	Sb	51	121.75 ^*	630.74	1,750
�Argon ^h,i	Ar	18	39.948 ^b,c,d,g	- 189.2	- 185.7
�Arsenic (gray)	As	33	74.9216 ^a	817(28 atm)	613(sub.)
�Astatine	At	85	(210)	302	337
�Barium ⁱ	Ba	56	137.33	725	1,640
�Berkelium	Bk	97	(247)	-	-
�Beryllium	Be	4	9.01218 ^a	1,278 ± 5	2,970(5 mm)
�Bismuth	Bi	83	208.9804 ^a	271.3	1,560 ± 5
�Boron ^h,j	B	5	10.81 ^c,d,e	2,300	2,550(sub.)
�Bromine	Br	35	79.904 ^c	- 7.2	58.78
�Cadmium ⁱ	Cd	48	112.41	320.9	765
�Calcium ⁱ	Ca	20	40.08	839 ± 2	1,484
�Californium	Cf	98	(251)	-	-
�Carbon ^h,l	C	6	12.011 ^b,d	3,652(sub.)	1
�Cerium ⁱ	Ce	58	140.12	798 ± 3	3,257
�Cesium	Cs	55	132.9054 ^c	28.40 ± 0.01	669.3
�Chlorine	Cl	17	35.453 ^c	- 100.98	- 34.6
�Chromium	Cr	24	51.996 ^c	1,857 ± 20	2,672
�Cobalt	Co	27	58.9332 ^a	1,495	2,870
�Copper ^h	Cu	29	63.546 ^c,d	1,083.4 ± 0.2	2,567
�Curium	Cm	96	(247)	1,340 ± 40
Dysprosium	Dy	66	162.50 ^*	1,409	2,335
�Einsteinium	Es	99	(254)	-	-
�Erbium	Er	68	167.26 ^*	1,522	2,510
�Europium ⁱ	Eu	63	151.96	822 ± 5	1,597
�Fermium	Fm	100	(257)	-	-
�Fluorine	F	9	18.998403 ^a	- 219.62	- 188.14
�Francium	Fr	87	(223)	(27)	(677)
�Gadolinium ⁱ	Gd	64	157.25 ^*	1,311 ± 1	3,233
�Gallium	Ga	31	69.72	29.78	2,403
�Germanium	Ge	32	72.59 ^*	937.4	2,830
�Gold	Au	79	196.9665 ^a	1,064.43	3,080
�Hafnium	Hf	72	178.49 ^*	2,227 ± 20	4,602
�Helium ⁱ	He	2	4.00260 ^b	- 272.2	- 268.934
�Holmium	Ho	67	164.9304 ^a	1,470	2,720
�Hydrogen	H	1	1.0079 ^b,d	- 259.14	- 252.87
Indium ⁱ	In	49	114.82	156.61	2,080
�Iodine	I	53	126.9045 ^a	113.5	184.35
�Iridium	Ir	77	192.22 ^*	2,410	4,130
�Iron	Fe	26	55.847 ^*	1,535	2,750
�Krypton ^i,j	Kr	36	83.80	- 156.6	- 152.30 ± 0.10
�Lanthanum ⁱ	La	57	138.9055 ^*b	920 ± 5	3,454
�Lawrencium	Lr	103	(260)	-	-
�Lead ^h,j	Pb	82	207.2 ^d,g	327.502	1,740
�Lithium ^h,i,j	Li	3	6.941 ^*c,d,e	180.54	1,342
�Lutetium	Lu	71	174.967 ± 0.003	1,656 ± 5	3,315
�Magnesium ⁱ	Mg	12	24.305 ^c	648.8 ± 0.5	1.090
�Manganese	Mn	25	54.9380 ^a	1,244 ± 3	1,962
�Mendelevium	Md	101	(257)	-	-
�Mercury	Hg	80	200.59 ^*	- 38.87	356.58
�Molybdenum	Mo	42	95.94	2,617	4,612
�Neodymium ⁱ	Nd	60	144.24 ^*	1,010	3,127
�Neon ^j	Ne	10	20.179 ^*c	- 248.67	- 246.048
�Neptunium ^k	Np	93	237.0482 ^b	640 ± 1	3,902
�Nickel	Ni	28	58.70	1,453	2,732
�Niobium
(Columbium)	Nb	41	92.9064 ^a	2,468 ± 10	4,742
�Nitrogen	N	7	14.0067 ^b,c	- 209.86	- 195.8
�Nobelium	No	102	(259)	-	-
�Osmium ⁱ	Os	76	190.2	3,045 ± 30	5,027 ± 100
�Oxygen ^h	O	8	15.9994 ^*b,c,d	- 218.4	- 182.962
�Palladium ⁱ	Pd	46	106.4	1,554	3,140
�Phosphorus	P	15	30.97376	44.1 (white)	280 (white)
�Platinum	Pt	78	195.09 ^*	1,772	3,827 ± 100
�Plutonium	Pu	94	(244)	641	3,232
�Polonium	Po	84	(209)	254	962
�Potassium	K	19	39.0983 ^*	63.25	759.9
�Praeseodymium	Pr	59	140.9077 ^a	931 ± 4	3,212
�Promethium	Pm	61	(145)	- 1,080	2,460(?)
�Protactinium ^k	Pa	91	231.0359 ^a	< 1,600	-
�Radium ^i,k	Ra	88	226.0254 ^a,f,g	700	1,140
�Radon	Rn	86	(222)	- 71	- 61.8
�Rhenium	Re	75	186.2	3,180	5,627(est.)
�Rhodium	Rh	45	102.9055 ^a	1,966 ± 3	3,727 ± 100
�Rubidium ⁱ	Rb	37	85.4678 ^*c	38.89	686
�Ruthenium ⁱ	Ru	44	101.07 ^*	2,310	3,900
�Samarium ⁱ	Sm	62	150.4	1,072 ± 5	1,778
�Scandium	Sc	21	44.9559 ^a	1,539	2,832
�Selenium	Se	34	78.96 ^*	217	684.9 ± 1.0
�Silicon	Si	14	28.0855 ^*	1,410	2,355
�Silver ⁱ	Ag	47	107.868 ^c	961.93	2,212
�Sodium	Na	11	22.98977 ^a	97.81 ± 0.03	882.9
�Strontium ⁱ	Sr	38	87.62 ^g	769	1,384
�Sulfur ^h	S	16	32.06 ^d	112.8	444.674
�Tantalum	Ta	73	180.9479 ^*b	2,996	5,425 ± 100
�Technetium	Tc	43	(97) ^f	2,172	4,877
�Tellurium ⁱ	Te	52	127.60 ^*	449.5 ± 0.3	989.8 ± 3.8
�Terbium	Tb	65	158.9254 ^a	1,360 ± 4	3,041
�Thallium	Tl	81	204.37 ^*	303.5	1,457 ± 10
�Thorium ^i,k	Th	90	232.0381 ^a	1,750	- 4,790
�Thulium	Tm	69	168.9342 ^a	1,545 ± 15	1,727
�Tin	Sn	50	118.69 ^*	231.9681	2,270
�Titanium	Ti	22	47.90 ^*	1,660 ± 10	3,287
�Tungsten	W	74	183.85 ^*	3,410 ± 20	5,660
�Uranium ^i,j	U	92	238.029 ^b,c,e	1,132.3 ± 0.8	3,818
�Vanadium	V	23	50.9415 ^b,c	1,890 ± 10	3,380
�Wolfram
(see Tungsten)
Xenon ^i,j	Xe	54	131.30	- 111.9	- 107.1 ± 3
�Ytterbium	Yb	70	173.04 ^*	824 ± 5	1,193
�Yttrium	Y	39	88.9059 ^a	1,523 ± 8	3,337
�Zinc	Zn	30	65.38	419.58	907
�Zirconium ⁱ	Zr	40	91.22	#1,852 ± 2	4,377

FNa Mononuclidic element. FNb Element with one predominant isotope (about 99 to 100% abundance). FNc Element for which the atomic weight is based on calibrated measurements. FNd Element for which variation in isotropic abundance in terrestrial samples limits the precision of the atomic weight given. FNe Element for which users are cautioned against the possibility of large variations in atomic weight due to inadvertant or undisclosed artificial isotropic separation in commercially available materials. FNf Most commonly available long-lived isotope. FNg In some geological specimens this element has a highly anomalous isotopic composition, corresponding to an atomic weight significantly different from that given. FNh Element for which known variations in isotopic composition in normal terrestrial material prevent a more precise atomic weight given;Ag (E) values should be applicable to any "normal" material. FNi Element for which geological specimens are known in which the element has an anomalous isotopic composition, such that the difference in atomic weight of the element in such specimens from that given in the Table may exceed considerably the implied uncertainty. FNj Element for which substantial variations in Ag from the value given can occur in commercially available material because of inadvertant or undisclosed change of isotopic composition. FNk Element for which the value Ag is that of the radioisotope of longest half-life. FNl Triple point: (graphite-liquid-gas), 3627 ± 50°C at a pressure of 10.1 MPa and (graphite-diamond-liquid), 3830-3930°C at a pressure of 12--13 GPa.

Volatile at 1500 °C [in gaseous state] Germanium Arsenic Selenium Bromine Krypton Rubidium Molybdenum Technetium Ruthenium Rhodium Rhenium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Cesium Tungsten Gold Lead

Refractory at 1500°C [condensed as liquid or solid] Beryllium Sodium Manganese Iron Cobalt Copper Strontium Yttrium Zirconium Niobium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Thorium Uranium Neptunium Plutonium Americium Curium

Table presents the fission yields for Pu and U-235 for a fission neutron spectrum and for a thermal neutron spectrum.

TABLE 1.10. Thermal-neutron fission yields (per cent) from U 233, U 235, and Pu 239 From: 3 E. Hyde, The Nuclear Properties of the Heavy Elements: Fission Phenomena 87-111 (1971 ed.); see also id., at 141 et seq.

The same chains of fission products appear in the fission of other nuclei, e.g., ²³³U, ²³⁹Pu, but with different yields than those given above. Fission involving fast neutrons (E~~ 0.4-7 mev), as in the detonation of a nuclear fission device will also result in fission product yields somewhat different from those produced in fission by thermal neutrons (E~~ 0.025 ev).

Fission Product Decay Chains

Underlined numbers give experimental fission yields. Last fission yield along any chain usually represents total chain yield. Lower values for yields of earlier chain members may be caused by (1) direct formation in fission of later chain members, (2) chain branching, (3) experimental uncertainty. Latter accounts for cases where early chain member has higher yield than later one.

Where branching occurs, arrows are shown only for decay modes observed experimentally; fraction in each branch is given where known. Parentheses indicate nuclide probably occurs but has not been observed. References for fission yields are cited following chains. Prepared by Dr. S. Katcoff from data available to 1960; Reprinted from Nucleonics 18, 201 (1960). Copyright 1960 McGraw-Hill Publishing Company, Inc.

1. C. D. Coryell and N. Sugarman, editors, �Radiochemical Studies: The Fission Products,� Nat. Nucl. Energ. Ser. IV-9 (New York: McGraw-Hill Book Co., Inc. 1951).

2. J. M. Siegal and L. E. Glendenin, Ref. 1, p.549.

3. E. P. Steinberg and D. W. Engelkemeir, REf. 1, p.566.

4. N. Sugerman, Phys. Rev. 89, 570 (1953).

5. J. G. Cuninghame, Phil. Mag. 44, 900 (1953).

6. L. E. Glendenin, Ref. 1, p. 596.

7. L. E. Glendenin, Ref. 1, Editors' Note, p. 59).

8. J. R. Arnold and N. Sugarman, J. Chem. Phys. 15, 703 (1947).

9. J. A. Petruska, et al., Can. J. Phys. 33, 693 (1955).

10. A. T. Blades, H. G. Thode, 7. Naturforsch. 10m. 838 (1955).

11. A. T. Blades, et al., Can J. Chem. 34, 233 (1956).

12. J. E. Sattizahn, et al., Bull. Am. Phys. Soc. 11, 2, 197 (1957).

13. L. E. Glendenin, et al., quoted by E. P. Steinberg and L. E. Glendenin, in Proceedings of the International Conference on the Peaceful Uses of Atomic Energy 7, p. 3 (United Nations, New York, 1956).

14. A. C. Wahl, J. Inorg. Nucl. Chem. 6, 263 (1958). Also private communication from A. C. Wahl, Sept., 1960, and Ph.D. theses from Washington University, St. Louis (1959) by R. L. Ferguson, D. E. Troutner, D. R. Nethaway, K Wolfsberg. Measured fractional cumulative yields of short-lived rare gases and independent yields of several other fission products.

15. A. F. Stehney and N. Sugarman, Phys. Rev. 89, 194 (1953).

16. G. W. Reed and A. Turkevich, Phys. Rev. 92, 1473 (1953).

17. A. P. Baerg and R. M. Bartholomew, Can. J. Chem. 35, 989 (1957).

18. G. W. Reed, Phys. Rev. 98, 1327 (1955).

19. W. E. Grummitt and G. M. Milton, J. Inorg. Nucl. Chem. 5, 93 (1957).

20. E. J. Hoagland and S. Katcoff, Ref. 1, p.660.

21. C. R. Dillard, et al., Ref. 1, p. 692.

22. C. D. Coryell et al., Phys. Rev. 77, 755 (1950).

23. J. Terrell, et al., Phys. Rev. 92, 1091 (1953).

24. D. R. Wiles and C. D. Coryell, Phys. Rev. 96, 696 (1954).

25. W. H. Hardwick, Phys. Rev. 92, 1972 (1953).

26. W. H. Sullivan, et al., Ref. 1, p. 808.

27. C. D. Coryell and J. W. Winchester, Progress Report, Laboratory for Nuclear

Science, MIT (Aug. 31, 1955).

28. D. W. Engelkemeir, et al., Ref. 1, p. 1372.

29. J. A. Seiler, Ref. 1, p. 860.

30. A. C. Wahl and N. A. Bonner, Phys. Rev. 85, 570 (1952).

31. R. P. Metcalf, Ref. 1, p. 905.

32. E. P. Steinberg, Ref. 1, Editors' Note, p. 913.

33. G. R. Leader, Ref. 1, p. 919.

34. J. A. Seiler, Ref. 1, p. 910.

35. C. W. Stanley and L. E. Glendenin, Ref. 1, p. 947.

36. G. R. Leader and W. H. Sullivan, Ref. 1, p. 934.

37. A. C. Pappas, Technical Report No. 63, Laboratory for Nuclear Science, MIT

(Sept., 1953).

38. L. E. Glendenin, Ref. 1, Editors' Note, p. 979.

39. B. C. Purkayastha, G. R. Martin, Can. J. Chem. 34, 293 (1956).

40. A. C. Pappas and D. R. Wiles, J. Inorg. Nucl. Chem. 2, 69 (1956).

41. R. M. Bartholomew, et al., Can. J. Chem. 31, 120 (1953).

42. S. Katcoff, W. Rubinson, Phys. Rev. 91, 1458 (1953).

43. L. Yaffe, et al., Can. J. Chem. 31, 48 (1953).

44. A. C. Wahl, Phys. Rev. 99, 730 (1955).

45. L. E. Glendenin, R. P. Metcalf, Ref. 1, p. 992.

46. S. Katcoff, et al., Ref. 1, p. 1005.

47. F. Brown, L. Yaffe, Can. J. Chem. 31, 242 (1953).

48. C. W. Stanley and S. Katcoff, J. Chem. Phys. 17, 653 (1949).

49. F. Brown, J. Inorg. Nucl. Chem. 1, 248 (1955).

50. R. M. Bartholomew and A. P. Baerg, Can. J. Chem. 34, 201 (1956).

51. The value 6.44 is an average of 6.33 and 6.56 from Refs. 9 and 13, respectively. It is assumed that these mass-spectrometric measurements on Cc ¹⁴⁰ are also accurate measures of the yield of Ba ¹⁴⁰ since independent yields of La ¹⁴⁰ and Cc ¹⁴⁰ are very small (Ref. 19). Many fission yields have been determined relative to Ba ¹⁴⁰; these are now normalized to yield of 6.44 for the latter. Absolute radiochemical measurements of Ba ¹⁴⁰, Refs. 16 and 52, average 6.35.

52. L. Yaffe, et al., Can. J. Chem. 32, 1917 (1954); D. C. Santry and L. Yaffe, Can. J. Chem., 38, 464 (1960).

53. W. H. Burgus and N. E. Ballou, Ref. 1, p. 1184.

54. G. P. Ford, C. W. Stanley, AECD-3551 (1953).

55. S. Katcoff, et al., Ref. 1, p. 1167.

56. J. A. Marinsky and L. E. Glendenin, Ref. 1, p. 1229 and p. 1254.

57. H. G. Petrow and G. Rocco, Phys. Rev. 96, 1614 (1954).

58. L. Winsberg, Ref. 1, p. 1284.

59. L. Winsberg, Ref. 1, p. 1302 and p. 1311.

60. L. Winsberg, Ref. 1, p. 1292.

61. E. C. Freiling, et al., Phys. Rev. 96, 102 (1954).

62. J. D. Knight, et al., J. Inorg. Nucl. Chem. 10, 183 (1959).

63. J. E. Sattizahn, et al., J. Inorg. Nucl. Chem. 12, 206 (1960).

64. J. A. Marinsky and E. Eichler, J. Inorg. Nucl. Chem. 12, 223 (1960).

65. Y. Y. Chu, UCRL-8926 (1959).

66. K. Wolfsberg, et al., J. Inorg. Nucl. Chem. 12, 201 (1960).

Table 7.	APPROXIMATE YIELDS OF
�	SEVERAL IMPORTANT
�	ACTIVATION RADIONUCLIDES
�	PER MEGATON OF FISSION.
�

radionuclide	half-life	yield (in MCi)
3_H	12.5 years	< 1
1
14_C	5600 years	3.4 X 10 ⁴
6
39_Ar	260 years	59
18
24_Na	15 hours	2.8 x 10 ¹¹
11
32_P	14 days	1.9 x 10 ⁸
15
42_K	12 hours	3 x 10 ¹⁰
19
45_Ca	52 days	4.7 x 10 ⁷
20
56_Mn	16 hours	3.4 x 10 ¹¹
25
55_Fe	2.9 years	1.7 x 10 ⁷
26
59_Fe	46 days	2.2 x 10 ⁶
26

TABLE 4

Isotope	protons	Neutrons	n/p
�
233U	92	141	1.532
235U	92	143	1.554
238U	92	146	1.5869
�239Pu	94	145	1.542

�

		Specific Activity (SA)
nuclide	half-life	(Ci/gm)
239 _Pu	24,400 yrs
137 _Cs	30.28 yrs
90 _Sr	28.1 yrs
131 _I	8 days	1.24 x 10 ⁵

nuclide	half-life (yrs)	SA (Ci/gm)
�>233 _U	1.62 x 10 ⁵	9.45 x 10 ^-3
�>235 _U	7.1 x 10 ⁸	2.1 x 10 ^-6
�>238 _U	4.51 x 10 ⁹	3.3 x 10 ^-7
�>238 _Pu	86	17.44
�>239 _Pu	24,400	0.062
�>240 _Pu	6,580	0.226
�>241 _Pu	13.2	112.2

Fission product	U ²³³	U ²³⁵	Pu²³⁹
Zn ⁷²		1.6 X 10 ^-5	11.2 X 10 ^-4
Ga ⁷³		1.1 X 10 ^-4
Ga ⁷⁴		3.5 X 10 ^-4
Ge ⁷⁷	0.011	0.0031
As ⁷⁷	0.021	0.0083
Ge ⁷⁸		0.020
As ⁷⁸		0.020
As ⁷⁹		0.056
total Br ⁸⁰	3.9 X 10 ^-4	1.0 X 10 ^-5
Se ^81m		0.0084
Se ⁸¹		0.14
Br ⁸²	1.1 X 10 ^-3	4 X 10 ^-5
Se ⁸³		0.22
Br ⁸³	0.87	0.51	0.084
Kr ³³	1.17	0.544	.029
Br ⁸⁴		0.019
Br ⁸⁴		0.92
�stable Kr ⁸⁴	1.95	1.00	0.47
Se ⁸⁵		~1.1
Kr ⁸⁵	0.58	0.293	0.127
�stable Rb ⁸⁵	2.51	1.30	0.539
�stable Kr ⁸⁶	3.27	2.02	0.76
Rb ⁸⁶	2.3 X 10 ⁰⁴	2.9 X 10 ^-5
Se ⁸⁷		~2
Rb ⁸⁷	4.56	2.49	0.92
�stable Sr ⁸⁸	5.37	3.57	1.42
Sr ⁸⁹	5.86	4.79	1.71
Sr ⁹⁰	6.43	5.77	2.25
Sr ⁹¹	5.57	5.81	2.43
Y ⁹¹	5.1	~5.4	2.9
stable Zr ⁹¹	6.43	5.84	2.61
Sr ⁹²		5.3
stable Zr ⁹²	6.64	6.03	3.14
Y ⁹³	6.98	6.45	3.97
Zr ⁹³	6.98	6.45	3.97
stable Zr ⁹⁴	6.68	6.40	4.48
Zr ⁹⁵	6.1	6.2	5.8
stable Mo ⁹⁵	6.11	6.27	5.03
stable Zr ⁹⁴	5.58	6.33	5.17
Mb ⁹⁴	6.5 X 10 ^-3	6.1 X 10 ^-4	3.6 X 10 ^-3
Zr ⁹⁷		5.9	5.5
stable Mo ⁹⁷	5.37	6.09	5.65
Nb ⁹⁵	0.20	0.064	0.20
stable Mo ⁹⁸	5.15	5.75	5.89
Mo ⁹⁹	4.80	6.06	6.10
stable Mo ¹⁰⁰	4.41	6.06	6.10
stable Ru ¹⁰¹	4.41	6.30	7.10
stable Ru ¹⁰²	2.22	4.1	5.99
Ru ¹⁰³	1.8	3.0	5.67
stable Ru ¹⁰⁴	0.94	1.8	5.93
Ru ¹⁰⁵		0.9
Rh ¹⁰⁵			3.9
Ru ¹⁰⁶	0.24	0.38	4.57
Rh 107		0.19
Pd ¹⁰⁹	0.044	0.030	1.40
Ag ¹¹¹	0.024	0.019	0.23
Pd ¹¹²	0.016	0.010	0.12
Cd ^113m	0.0011	0.0007	0.0031
Cd ¹¹⁵	0.020	0.0097	0.0038
total 115	0.021	0.0104	0.041
Cd ^117m		0.011
Sn ¹²¹	0.018	0.015	0.043
Sn ¹²³		0.0013
Sn ¹²⁵	0.052	0.013	0.071
Sb ¹²⁵		0.021
Sb ¹²⁷	0.60	0.13	0.39
Te ^127m		0.035
Sn ¹²⁸		0.37
I¹²⁸		3 X 10 ^-5
Te ^129m		0.35
I ¹²⁹		0.8
Sn ¹³⁰		2.0
I ¹³⁰		5 X 10 ^-4
Te ^131m		0.44
I ¹³¹	2.9	~3.1	3.77
stable Xe ¹³¹	3.39	2.93	3.78
Te ¹³²	4.4	~4.7	5.1
stable Xe ¹³²	4.64	4.38	5.26
I ¹³³		~6.9	5.2
Xe ¹³³		6.62	6.91
stable Cs ¹³³	5.78	6.59	6.91
I ¹³⁴		7.8
stable Xe ¹³⁴	5.95	8.06	7.47
I ¹³⁵	5.5	6.1	5.7
Xe ¹³⁵		6.3
Cs ¹³⁵	6.03	6.41	7.17
I ¹³⁴	1.8	3.1	2.1
stable Xe ¹³⁴	6.63	6.46	6.63
Cs ¹³⁴	0.12	0.0068	0.11
Cs ¹³⁷	6.58	6.15	6.63
stable Ba ¹³³		5.74	6.31
Ba ¹³⁹	6.45	6.55	5.87
Ba ¹⁴⁰	5.4	6.35	5.4
stable Ce ¹⁴⁰	6.47	6.44	5.60
La ¹⁴¹	7.1	6.4	5.7
Ce ¹⁴¹		~6.0	5.1
stable Pr ¹⁴¹	6.4		(4.5)*
stable Ce ¹⁴²	6.83	6.01	5.01
Ce ¹⁴³		5.7	5.3
stable Nd ¹⁴³	5.99	6.03	4.57
Ce ¹⁴⁴	4.5	~6.0	3.79
Nd ¹⁴⁴	4.61	5.62	3.93
stable Nd ¹⁴⁵	3.47	3.98	3.13
stable Nd ¹⁴⁰	2.63	3.07	2.60
Nd ¹⁴⁷		~2.7	2.2
Pm ¹⁴⁷	1.9		1.94
Sm ¹⁴⁷	1.98	2.36	2.07
stable Nd ¹⁴⁸	1.34	1.71	1.73
Pm ¹⁴⁹			1.4
stable Sm ¹⁴⁹	0.76	1.13	1.32
stable Nd ¹⁵⁰	0.56	0.67	1.01
Sm ¹⁵¹	0.335	0.44	0.80
stable Sm ¹⁵²	0.220	0.281	0.62
Sm ¹⁵³	0.11	0.15	0.37
stable Eu ¹⁵³	0.13	0.169
stable Sm ¹⁵⁴	0.045	0.077	0.29
Sm ¹⁵⁵		0.033	0.23
Eu ¹⁵⁵		0.033
Eu ¹⁵⁶	0.011	0.014	0.11
Eu ¹⁵⁷		0.0078
Eu ¹⁵⁸		0.002
Gd ¹⁵⁹		0.00107	0.021
Tb ¹⁶¹		7.6 X 10 ^-5	0.0039
Dy ¹⁶⁶			6.8 X 10 ^-5