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PERIODIC TABLE OF THE ELEMENTS
Selected Radioactive Isotopes
Table of Selected Radioactive Isotopes Naturally occurring radioactive isotopes are designated by a mass
number in blue (although some are also rnanutactueeo). Letter m in-
dicates an isomer 01 anomer isotope of the same mass number
, P5_3m"ilr 67 (6L88hllr .,Sb 124NMLKJIHGFEDCBA(W.20d)/r ••w 181 1140~EC .,Po 231 p.26J<.10'l1o Half-lives follow in parentheses, where e. min. h. d, and y standCBAre-
,H 3 1l2.26yl/r ",In 65 [2M.ldiP+,E( 125 (2.7)'!P- 185 (7S.1diP- ..,u 233 (L59x IOJrlo spectivefyforseconds, minutes, hours, days, and years. The table
.•. 7 (53.3diEC .,Go 67 {78.2hlEC 121 m(154d!rr 188 [69djll- 23< /2.44><10'ylex includes mainly the longer-lived radioactive isotopes; many curers
10 1'.6~IO'yl Il- 72 (l4,IOh1P- 123m(119.7d)IT ,.lIe 167 (5~ IO'°ylP- 235 17.04~IO"yla have been prepared. Isotopes known to be radioactive but wilh
GROUP l' 12040m"ip+ .,Ge 68 (275dlEC 117m(I09d)fT ,.Os 194 (6.0)'1 p- 236 /2.34)(IO'\'io. halt-fives exceeding lO'~y have not been included. Symbols de-
14 (5730Yllr :uAs 73 (80.3d)EC >.>1 129 (1(nlO\·ilf" mr 192 (74.2diP-,P+.EC aaa (4.£7~10·y!0. scribing Ihe principal mode (or modes) of decay are as follows
1/IA 18 1l09_B~r 74 [17.9d)P-,jl",K 131 (8040dl/r rtAu 195 (163~EC .,N:p236 (llxlO'yjEC Ir (theseprocessesaregenerallyaccompaniedbygammaradialion)' 18NIII
uNo 22 [2.602ylP,EC "'" 75 [118.5d)P- •.•Xe 133 15.25d)P- 196 [6.18dJP",£(,P- f2:'4x 10'yla'
[I5.02,*P- 79 (6.5xIO'yl/T 135 !9.IOhjp- 19' (2.696d)P- 2J9 f2.346dJp- alpha particle emission
1.00794 '" " 4.00260
"Mg 28 [20.9hItr 82 [35.34hIP- "Cs 13~ (Hl6yj/T 199 [3.15dJf1- ...p,. 238 [8715ylo rr beta particle (electron) emission
1 1,-1 " ." p+ 2
"AI 26 [7.2x IO'ylf3~,EC "'" (2.1x lO'ylEC 135 (2.9xlO·yl~ oHg 203 [46.8d)P- 239 (2.41 x 10'ylo. positron emission
20.28 ••P 32 II4.26d)p- 85 (lO.72ylfr 137 pO.17ylP- ••n (3.77yjtr /6.54xlO'y)a EC orbital electron capture 216
" 2" 4. H
13.81 ••s 35 (87.2d){r .Rb 86 [l8.7djP- ••Sa UO 112.80')p- "Pb 202 [3xlO'ylEC (3.8" 10'ylo: IT isomerictransilion from upper to lower isomeric state 0.95
"" S, al26atm e
36 13.01x IO'ylP- 87 [4.8xl0"ylP- 17W 137 (6x 10'I1K 205 [h 10'ylEC 2M [8.3x 10'yja spontaneous fission
0.0899 t H "a .s, '" 0.1785t
36 (37.2m~p- 90 {28.8y1P- tan [40.3hjP- 210 (22.3ylfF,a ••Am 241 j432yla
", "k 37 (35.Q2d]K .Y sa (I06.6dl/l",EC uCc 1M (2B. [I02yla ••8k2A7 (lAx 10'yjll
1615 2744 "c, 51 (27.70d)EC .J, 97 {2.6xI0·yJEC 151 (93yjp- 210 (138.38d]0: ••CJ 2A9 (35lylo 4275 4675· 77.344 90.2 85.0
27.07N
453.7 1560 ,,1M 53 (2xI0"I1EC 911 .,Eu 152 (13yJP"',EC,p- uAI 20> (5.4I1EC,a 251 2348 3915· 63.15 54.4 53.55 24.56
~:~;~~~rJlp-:' !'lOOn-
(313.0d)EC 99 (8.5yI P- 210 (El.1hjEC ooE5 252 W2d)a
0.534 Li 1.85 Be 56 (2.578h1lr ..." 106 (367d)(j- •• Gel '1"50 (2.1x W'yla 211 (7.2IhjK,0 2.37 B 2.26 C 1.251t N 1.429t 01.696t F 0.900t e
" 253 f20.AldJa
1 [He]2s2 .Fe ss (44.6d]{r ••Rh 101 {3.3yJEC ••1b 158 ••Rn222 [He]2s22p1 [He]2s22p2 [He]2s22p3 [He]2s22p4 [He]2s22pO
[He]2s !1.2~ 10'ylEC,lr (3.824dJa 2" f276dJo [He]2s22pS
Lithium Beryllium ,,<- 56 (78.8d)P+,EC ••Pel 103 (170d1EC 160 (72.3dJP- .,f.212 {19.311"1ECi1i.a \oofm255 (20.1hja Boron Carbon Nitrogen Oxygen Fluorine Neon
57 (270djEC 107 [7xlO"y\ P- .,Ho 166mll.2x 10'yJ tr 221 [I5minlr 257 (IOO5dJo
58 (71.3d]p•.,EC •••Ag 108 [127ylEC ••Tm 170 1128.6d)iJ- 22J (21.811"1P-i1i ,o,Md258 {55d)a
1122.98~770 12 24.;050 60 110 f252d]p- 171 {l.92)jtr uRa 226 [L60x 10'yl a {58",.,0: 1326.98;538 32.065 35.453 39.948
15·272Ylr \00""0259 14 28.~,~55 1530_9::~~ 16 17 18
uN. 57 (36.0h!P+,EC III (7.45~/r ",Yb 169 [32.00')EC •• Ac 227 (2I.77I1P- ,o..d.r260 p.O monj 0 6,:1:2,4, :t1,7.5,3
1156.1N [8xlO'I1K ..cd 109 [453d)EC 175 (4.19d)p- ••Th228 (1.913\1'" ,•.•Rf261 3538 553 717.75
1363M 2792 AI 239.11 CI 87.8 A
6) (92YlP- ..In 11~ (A9.51djlT "Lu 176 [3.7><10'°yjp- 230 ,••D• b262 "'<- 933.5 1687 317.3 388.36 171.65 83.8
371.0 a 923 9 " ,.,s,., 121 (76ylp- ~~:;;~a~~rl~ 14040
""" •. (12.70hlP-, p". EC "To 182 (115.0d)/l- 232 ,ooSg263 p.9~0:
0.971 1.74 2.6989 2.33 5i 1.82 P 2.07 5 3.214t 1.784t r
[Ne]3s2 9 [Ne]3s23pt [Ne]3s23p2 [Ne]3s23p3 [Nej3s23p4 [Ne]3s23p5 {Ne]3s23p6
[Ne]3s'
Sodium Magnesium 3/11IA 4/1VA SNA 6NIA 7NIIA 8 .---- VIIIA-----, 10 11/1B 12/11B Aluminum Silicon Phosphorus Sulfur Chlorine Argon
19 39.~983 40.078 2144.95,591 47.867 51.996 55.845 586 63.546 65.409 69.723 72.64 78.96 79.904 83.80
20 22 23 5°·:~1:2 24 25 5~;,~~?7 26 27 58.~:;2 28 i;4 29 30 31 32 3374';i~6 34 35 36
2 4,3,2 3,6,2 3,2,6 2,1 2 1,3 4 4,6,-2 ±t,7,5,3 0,2
1033 1757 3109 3560 3680 2945 3134 3200 3186 1180 Z 876'-'A 958 331.95 119,93
2234M 2835 C 2477 G 3106 G
336.8 1115 1814 1941 2183 2180 1519 n 1811 1768 1728 1357.8 U692.66 n 302.91 1211.4 e ,l1~';;, 5 494 265.95 115.8
0.862 K 1.55 Ca 2.99 5c 4.54 Ti 6.11 V 7.19 Cr 7.44 7.874 Fe 8.90 Co 8.90 Ni 8.96 7.13 6.095 a 5.32 5.73 4.79 5e 3.12 Br 3.73t Kr
[Ar]4s2 2 {Ar]3d24s2 [Ar)3d34s2 [Ar]3d54s1 [Ar]3d54s2 [Ar}3d54s2 [Ar)3d74s2 [Ar]3de4s2 [Arj3d'04s 2 [Ar]3d'04s24pl [Ar]3d104s24p2 [Ar]3d104s24p3 [Ar]3d04s24p4 {Ar]3d104s24p5 [Ar]3d104s24p6
[Ar]4s' [Ar]3d'4s ' [Arj3d'04s '
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
37 85.4~78 87.62 39 88.9~59 91.224 95.94 (98) 101.07 1 106.42 47107.8,682 112.41 114.82 50 1181.~0 121.760 127.60 131.29
38 40 4192.90;,~,~ 42 43 44 45 02.92?;'~0 46 2,4 48 49 51 52 53126.;~~:;7 54
2 4 6,5,4,3,2 7,5,4 2,3,4,6,8 2 3 t3,5 4,6,-2 0,2,4,6,8
1655 3618 4682 5017 4912M 4538 3968 3236 2435 A 2345 1261 457.51 165.11 .Xi
312.46 4423 R 10'0 Cd 429.75 2875 5 186°5b
961 Rb 1050 1795 2128 2730 2896 2430 2607 2237 1828 1234.93 9 594.22 505.08 n 903.78 722.66 386.85 161.4 e
1.532 2.54 5r 4.47 V 6.51 Zr 8.57 Nb 10.22 0 11.5" ¥© 12.37 U 12.41 Rh 12.0 Pd 10.50 8.65 7.31 In 7.31 6.69 6.24 Te 4.93 I 5.90t
[Kr)Ssl [Kr)Ss2 {Kr]4d15s2 2 2 [Kr]4d4Ssl {Kr]4d5Ss 5 2 [Kr]4d7Ss [Kr]4d6Ss [Kr]4d'O [Kr]4d105s 1 2 [Kr)4dlOSs2Spl [Kr]4dlOSs2Sp2 [Kr]4d tOSs25p3 (Kr]4dtOSs2Sp4 [Kr]4d1OSs2Sp5 [Kr]4d105s2Sp5
[Kr)4d Ss ' [Krj4d 5s ' ' ' [Kr]4d °5s
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
55132.9?545 56137}27 57138.9~55 178.49 183.84 190.23 195.08 200.59 81204.3:~3 207.2 83208.9:~4 (209) (210) (222)
72 4 73'80.9:,~9 74 6,5,4,3,2 75 !,~~5;?;2 76 4,8,6,3,2 77 19~::,g 78 4,2 79969~,~55 80 82 2,4 84 4,2,6 85 ±1,7,5,3 86
2.1 0,2
2170 4876 5730 5828 sa70 4700 1746 1837 - 610" 211.4R
944 C 3737 L * 5285 0 4098 P 3130 A 62988 H9 2022 Pb
301,54 5 1000 1191 a 2506 3290 3695 3459 3300 2720 2041.55 t 1337.33 U 234.32 577 600.61 544.55 527 575 202
1.87 3.5 Ba 6.15 13.31 Hf 16.65 Ta 19.3 W21.0 Re 22.57 S 22.42 Ir 21.45 19.3 13.55 11.85 TI 11.35 9.75 Bi 9.3 Po - At 9.73t n
1 1 2 14 2 4 2 4 s 2 6 2 4 7 2 9 1 10 1 4 [Xe)4f14Sd1Of3s26pl 4 t 2 (Xe]4f'45dtOBs26p4
[Xej6s [Xe]6s2 [Xe]5d 6s [Xe]4f14Sd26s2 [Xe]4f 5d36s [Xe]4f'45d 6s (Xe]4f' 5d 6s IXe]4f'45d 6s (Xe]4fI Sd 6s [Xe]4f'4Sd 6s [Xe]4f'4Sd 6s [Xe]4f' Sd106s2 [XeJ4P 5d 06s 6p2 {Xe]4ft45d'06s26p3 [Xe)4f14SdOSs26p5 [Xe]4f'45dl06s26p
'
Cesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon
(223) (226) 89 J227) 104 ~61) 1 05~262) 106 (266) 1 07 ~264) 1 08~277) 1 09~268) 11 0~69) 11 j (272) 112 (285) 113 (284) 114 (289) 115 (288)
87 1 88 2 116 117 118
950' 1413 3470· A** - - - - - - - - - -
300 973 1324 C - - - - - - - - ~- - -
Fr 5.0 Ra 10.07 ~~ ~~ ~~ ~~ I~ ~~ - ~~ ~M~ ~M~ - ~M~
- - - - ~~ - - - - - -
t4 t4 5 Z 14 9 == ~M~ 1Q
[Rn]7st [Rn)7s2 [Rn)6dt7s2 [Rn)5f 6d27s2' {Rn]5f 6d37s2' [Rn)Sj146d47s2· IRnj5t'46d 7s ' (Rnj5f'46d67s2' [RnjSf'46d77s2' [An]5f'46d87s2· [AnJ5f 6d 7s [Rn]Sf146dt07s2' [Rn[SP46<:PO]s27pl' ~'151"~~77~ [Rn]5f'~6d'07s27p3· [Rn]Sf146d 7slJp4
Francium Radium Actinium Rutherfordiurn Dubnium Seaborgium Bohrium Hassium Meitnerium (Darmstadtium) (Roentgenium) (Ununbium) (Ununtrium) (Ununquadium) (Ununpentium) (Ununhexium) (Ununseptium) (Ununoctium)
• Estimated Values
59140.9~~65 144.24 (145) 150.36 157.25 65158.9~,~34 162.50 '64 9 167.26 173.04 174.967
ATOMIC ATOMIC 58 140.~,:6 60 61 62 63 151:~4 64 66 67 . ;°3 68 69168.;~:2 70 71
3 3 3,2 3 3 3 3,2 3
*3716 3785 3347 3273 2007 1869 3503 2840 2973 H 3140 2223T 3675
3546 Gd 1469 Vb
1071 1204 1294 1315 1347 1095 1586 1629 1685 Dy 1747 1802 1818 m 1092 1936
6.77 6.77 Pr 7.01 Nd 7.26 7.S2 m5.24 Eu 7.90 8.23 Tb 8.55 8.795 0 9.07 Er 9.32 6.903 9.841
BOlu::MBE\R KE~Ej'GHTO;;~~T~!~:,~;1,~S Ce ~I5 Lu
[Xe]4f36s2 4 2 2 jXej4176s2 2 2 [Xe]4fI16s2 t2 2 2 [Xe]4f146s2 t4 2
[Xe)4f1Sd6s2 [Xe]4f 6s [Xe]4f56s2 [Xe]4f66s [Xe]4FSd6s [Xe]4f96s [Xe]4f'06s2 [Xe]4f 6s [Xe)4f'36s [Xe]4f 5dI6s
POINT, K ' '
Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium lutetium
90232.03:1 912310~;9 (237) (244) (243) (247) (247) (251) (252) 100 (;57) 101 (;58)
MELTlN~ 30 9223:5~4~:,; 93 94 95 96 97 98 2,3,4 99 102 (2~';) 1 03 (2~2)
5,6,4,3 4,5,5,3 3,6,5,4,2 3 2,3,4 3
POINT K 1180. Z ** 4300' 4404 4175' 3505 226<1 - - - - - - - -
' --... 69273 n 5061 Th 1645 1406 917 913 1449 1620 1170· 1130· 1800' 1100' 1100·
2023 - oo@ 1900'
11.72 15.4' 16.9S 20.2 19.84 13.7 13.S" 14' - - - - - -
Pa U OO~ ~M ~I ~I ~lli ~~ ~~ ~I I~ ~~
7.1~ArJ3d1Q4S2 1 4 2 9 2 11 2 13 2
IRn)8d27s2 (Rn]5f26d17s2 [Rn)S/36d 7s2 [Rn]Sf 6d17s2 [Rn]Sf&7s2 {Rn]SF7s [Rn)Sf16d7s2 [Rn]Sf 7s {An]5fl07s2 [Rn)5f 7s [Rn]Sf'27s2 [Rn]5t 7s [Rn]St 147s2 (Rn]Sf'46dt7s2
'
Zinc Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium
/ ELECTRON
DENSITY at 300 K (3) \ CONFIGURATION
3 NOTES:
(g/cm ) NAME (1) Btack - solid. (2) Based upon carbon-tz. () indicates most The A & B subgroup designations, are those recommended by the Inter-
©Copyrighl2007 WVR International. Red - gas. stable or best known isotope. national Union of Pure and Applied Chemistry. Sargent-Weich
All Rights Reserved. Blue - liquid. (3) Entries marked with daggers refer to the Side 1
Outline - synthetically prepared. qaseous state at 273 K and 1 atm and are vWR'-b~
No portion of this work may be INlEflNATIONAl
reproduced in any form or by any given in units of gli.
means wittnrt express prior written Cataloq Number WL$·18806 P.O. Box 4130 • Buffalo, NY 14217
permission from VWRlSargent- 1-800-727-4368· FAX 1·800-676-2540
Welch. www.sargenlwelch.com
TABLE OF PERIODIC PROPERTIES OF THE ELEMENTS
Percent Ionic Character of a Single Chemical Bond
GROUP Difference in electronegativity 0.1 0.20.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.92.0 2.1 2.2 2.3CBA2A 2.5 2.62.72.8 2.9 3.0 3.1 3.2
:L/IAzyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA 18/V1II
Percentionicchoeccree % 0.5 1 2 4 6 9 12 '5 19 22 26 30 34 39 43 47 51 55 59 63 67 70 74 76 79 82 84 86 88 89 91 92 He@
0.32 2.20 0.93
0.79 0.4581 0.49 0.084
14.10 0.0585 DATA CONCERNING THEMORE STABLE ELEMENTARY (SUBATOMIC) PARTICLES 31.80 0.021
13.598 2/IIA • Thepositron {e+]has properties similar to those of the (neg· 24.587
14.304 0.1815 Neutron Proton Electron' Neutrino photon ative) ele7'C) (6) Generally at 293 K (20°C) (8) From density at 300 K (27°C) for liquid PO. Box 4130· Buffalo, NY 14217
@Copyrightl993 (4) At boiling point for polycrystalline material and solid clements: values for gaseous elements 1-800·727-4368· FAX 1-800-676-2540
©Copyrighl1994
@Copyrighl1995 (5) At melting point (7) Quantum mechanical value refer to liquid state at boiling point www.sargenlwelch.com
©Copyright 1996 for frcc atom
©Copyright 1998
@Copyrighl2000 Catalog Number WLS·18806 SIDE 2
@CopyrighI2001
©Copyrighl2002
@ Copyrighl 2004
e Copyrighl 2007 VVVRIntemalional
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