Thallium: Properties


Isotopes
  Natural
Abun. (%)
Atomic
Mass
Half-
life
Decay Mode
/Energy (/MeV)
Part. En.
/Intensity
(MeV/%)
Cross-sect.
Ther. Neut.
(b)
Spin
(h/2 pi)
Magnetic
Dipl.Mom.
(nm)
Electric
Quad. Mom.
(b)
Gamma En.
/Intensity
(MeV/%)
 179Tl   178.99139 0.2s alpha           
 182Tl   181.98551               
 183mTl     0.06s alpha    9/2-      
 183Tl   182.9826        1/2+      
 184Tl   183.98167 11s +,E.C./ 9.3
alpha
 
6.16
       0.2868
0.3399
0.3667
 185mTl     1.8s I.T./ 0.453
alpha/ 5.97
 
6.01
 9/2-     0.1688
0.284
 186mTl     4s I.T./ 0.374          0.3738
 186Tl   185.97851 28s +,E.C./ 8.5          0.3567
0.4026
0.4053
 187mTl     15.6s I.T./ 0.33    9/2+     0.2995
 187Tl   186.97624 50s +,E.C./ 5.9    1/2+      
 188mTl     1.18m +,E.C.    7+     Hg k x rays
0.4129
0.5043
0.5921
 188Tl   187.97588 1.2m +,E.C./ 7.8    2-     ver Tl[188m]
0.4129
 189mTl     1.4m +,E.C.    9/2- 3.878 nm -2.29 b 0.2156
0.2284
0.3175
0.4452
 189Tl   188.98078 2.3m +,E.C./ 5.2    1/2+     0.3337
0.451
0.5223
0.9422
 190mTl     3.7m +,E.C./ 4.2    7+ 0.495 nm   0.1968
0.4164
0.7311
 190Tl   189.97349 2.6m +,E.C./ 6.9 5.7  2-     0.4164
0.6254
0.6838
1.0999
 191mTl     5.2m +,E.C.    9/2+ 3.903 nm -2.3 b 0.2157
0.2647
0.3256
0.3359
 192mTl     10.8m +,E.C.    7+ 0.518 nm   0.174
0.4228
0.6348
0.7863
0.7455
 192Tl   191.97212 9.6m +,E.C./ 6.1    2-     0.3975
0.4228
0.6908
 193mTl     2.1m I.T.    9/2- 3.948 nm -2.2 b 0.365
 193Tl   192.97052 22m +,E.C./ 3.6    1/2+ 1.591 nm   0.2077
0.3244
0.344
0.6761
1.0447
1.5793
 194mTl     32.8m +/ 0.3
E.C.
   7+ 0.54 nm 0.62 b rad. an.
Hg k x rays
0.4282
0.6363
0.749
 194Tl   193.97092 34m +,E.C./ 5.2    2- 0.14 nm   0.3955
0.4282
0.6363
 195mTl     3.6s I.T./ 0.483    9/2-     Tl k x rays
0.099
0.3836
 195Tl   194.96963 1.16h E.C./ 2.8
+
   1/2+ 1.58 nm   rad. an.
Hg k x rays
0.2422
0.5635
0.8845
1.3639
0.13 - 2.5
 196mTl     1.41h +,E.C./ 4.9    7+     0.084
0.4261
0.6353
0.6954
0.08 - 1
 196Tl   195.97046 1.84h +/ 4.4
E.C.
   2- 0.07 nm   rad. an.
Hg k x rays
0.4257
0.6105
0.03 - 2.4
 197mTl     0.54s I.T./ 0.608
+,E.C.
   9/2-     Tl k x rays
0.2262
0.4118
0.5872
0.6367
 197Tl   196.969498 2.83h +/ 2.19
E.C.
   1/2+ 1.58 nm   Hg k x rays
0.1522
0.4258
 198mTl     1.87h +,E.C.,I.T./ 0.5347    7+ 0.64 nm   Hg k x rays
Tl k x rays
0.4118
0.5872
0.6367
 198Tl   197.94046 5.3h E.C.,+/ 3.5 1.4
2.1
2.4
 2-     Hg k x rays
0.4118
0.6367
0.6759
0.23 - 2.8
 199Tl   198.96987 7.4h E.C./ 1.4    1/2- 1.6 nm   Hg k x rays
0.2082
0.2473
0.4555
 200Tl   199.970934 1.087d E.C./ 2.46 1.07
1.44
 2- 0.04 nm   Hg k x rays
0.36799
1.2057
0.11 - 2.3
 201Tl   200.970794 3.038d E.C./ 0.48    1/2+ 1.605 nm   Hg k x rays
0.13528
0.1674
 202Tl   201.972085 12.23d E.C./ 1.36    2- 0.06 nm   Hg k x rays
0.43957
 203Tl 29.524 % 202.97232       11 b1/2+ 1.62226 nm    
 204Tl     3.78y -/ 0.763
E.C./ 0.347
0.763/ 97 22 b2- 0.09 nm   Hg k x rays
 205Tl 70.476 % 204.974401       0.11 b1/2+ 1.63821 nm    
 206mTl     3.76m I.T./ 2.644    12-     Tl k x rays
0.2166
0.2661
0.4534
0.6866
1.0219
 206Tl   205.976084 4.2m -/ 1.531 1.53/ 99.9  0-     Pb k x rays
0.80313
 207mTl     1.3s I.T./ 1.35    11/2-     Tl k x rays
0.3501
1
 207Tl   206.977404 4.77m -/ 1.43 1.43/ 99.8  1/2+ 1.88 nm   0.89723
 208Tl   207.981988 3.053m -/ 4.998 1.28/ 23
1.52/ 22
1.796/ 51
 5+     Pb k x rays
0.27728
0.51061
0.58302
2.61448
 209Tl   208.985334 2.2m -/ 3.99 1.8/ 100  1/2+     Pb k x rays
0.1172
0.4651
1.5669
 210Tl   209.99056 1.3m -/ 5.49 1.3/ 25
1.9/ 56
 5+     Pb k x rays
0.081
0.2981
0.79788