Talk:Isotopes of tantalum/Archive 1

Data 2003
This article is part of Wikiproject Isotopes. Please keep style and phrasings consistent across the set of pages. For later reference and improved reliability, data from all considered multiple sources is collected here. References are denoted by these letters:
 * (A) G. Audi, O. Bersillon, J. Blachot, A.H. Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003). &mdash; Where this source indicates a speculative value, the # mark is also applied to values with weak assignment arguments from other sources, if grouped together. An asterisk after the A means that a comment of some importance may be available in the original.
 * (B) National Nuclear Data Center, Brookhaven National Laboratory, information extracted from the NuDat 2.1 database. (Retrieved Sept. 2005, from the code of the popup boxes).
 * (C) David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes. &mdash; The CRC uses rounded numbers with implied uncertainties, where this concurs with the range of another source it is treated as exactly equal in this comparison.
 * (D) More specific level data from reference B's Levels and Gammas database.
 * (E) Same as B but excitation energy replaced with that from D.

Z  N refs symbol   half-life                   spin              excitation energy 73 82 A   |Ta-155  |13(4) µs                   |(11/2-) 73 82 B   |Ta-155  |12(+4-3) µs                |11/2- 73 82 C   |Ta-155  |12 µs                      | 73 83 AB  |Ta-156  |144(24) ms                 |(2-) 73 83 C   |Ta-156  |0.11 s                     | 73 83 A   |Ta-156m |360(40) ms                 |(9+)             |100(8) keV 73 83 E   |Ta-156m |0.36(4) s                  |9+               |102(7) keV 73 84 AB  |Ta-157  |10.1(4) ms                 |1/2+ 73 84 C   |Ta-157  |10 ms                      | 73 84 AE  |Ta-157m1|4.3(1) ms                  |11/2-            |22(5) keV 73 84 A   |Ta-157m2|1.7(1) ms                  |(25/2-)          |1593(9) keV 73 84 E   |Ta-157m2|1.7(1) ms                  |(25/2-)          |1589(10) keV 73 85 A   |Ta-158  |49(8) ms                   |(2-) 73 85 B   |Ta-158  |55(15) ms                  |(2-) 73 85 C   |Ta-158  |37. ms                    | 73 85 A   |Ta-158m |36.0(8) ms                 |(9+)             |140(12) keV 73 85 E   |Ta-158m |36.7(15) ms                |(9+)             |141(9) keV 73 86 A   |Ta-159  |1.04(9) s                  |(1/2+) 73 86 B   |Ta-159  |0.83(18) s                 |(1/2-) 73 86 C   |Ta-159  |0.6 s                      | 73 86 A   |Ta-159m |514(9) ms                  |(11/2-)          |64(5) keV 73 86 E   |Ta-159m |515(20) ms                 |(11/2-)          |64(5) keV 73 87 A   |Ta-160  |1.70(20) s                 |(2#)- 73 87 B   |Ta-160  |1.55(4) s                  | 73 87 C   |Ta-160  |1.4 s                      | 73 87 A   |Ta-160m |1.55(4) s                  |(9)+             |310(90)# keV 73 87 B   |Ta-160m |1.7(2) s                   |                 |0 MeV 73 88 A   |Ta-161  |3# s                       |1/2+# 73 88 B   |Ta-161  |2.89(12) s                 | 73 88 C   |Ta-161  |2.9 s                      | 73 88 A   |Ta-161m |2.89(12) s                 |11/2-#           |50(50)# keV 73 88 D   |Ta-161m |2.89(12) s                 |                 |0 keV 73 89 A   |Ta-162  |3.57(12) s                 |3+# 73 89 BC  |Ta-162  |3.57(12) s                 | 73 90 A   |Ta-163  |10.6(18) s                 |1/2+# 73 90 BC  |Ta-163  |10.6(18) s                 | 73 91 ABC |Ta-164  |14.2(3) s                  |(3+) 73 92 A   |Ta-165  |31.0(15) s                 |5/2-# 73 92 BC  |Ta-165  |31.0(15) s                 | 73 92 A   |Ta-165m |                           |9/2-#            |60(30) keV 73 93 AB  |Ta-166  |34.4(5) s                  |(2)+ 73 93 C   |Ta-166  |34. s                     | 73 94 A   |Ta-167  |1.33(7) min                |(3/2+) 73 94 B   |Ta-167  |80(4) s                    |(3/2+) 73 94 C   |Ta-167  |1.4 min                    | 73 95 AB  |Ta-168  |2.0(1) min                 |(2-,3+) 73 95 C   |Ta-168  |2.4 min                    |3+ 73 96 AB  |Ta-169  |4.9(4) min                 |(5/2+) 73 96 C   |Ta-169  |4.9 min                    | 73 97 A   |Ta-170  |6.76(6) min                |(3)(+#) 73 97 BC  |Ta-170  |6.76(6) min                |(3+) 73 98 ABC |Ta-171  |23.3(3) min                |(5/2-) 73 99 AB  |Ta-172  |36.8(3) min                |(3+) 73 99 C   |Ta-172  |36.8 min                   |(3-) 73 100 AB |Ta-173  |3.14(13) h                 |5/2- 73 100 C  |Ta-173  |3.6 h                      |(5/2-) 73 101 AB |Ta-174  |1.14(8) h                  |3+ 73 101 C  |Ta-174  |1.12 h                     |(3+) 73 102 ABC |Ta-175 |10.5(2) h                  |7/2+ 73 103 AB |Ta-176  |8.09(5) h                  |(1)- 73 103 C  |Ta-176  |8.1 h                      |1- 73 103 A  |Ta-176m1|1.1(1) ms                  |(+)              |103.0(10) keV 73 103 D  |Ta-176m1|1.1(1) ms                  |(+)              |103.0 keV 73 103 D  |Ta-176m2|3.8(4) µs                  |(14-)            |1372.6(11)+X keV 73 103 A  |Ta-176m3|0.97(7) ms                 |(20-)            |2820(50) keV 73 103 D  |Ta-176m3|0.97(7) ms                 |(20-)            |2774.8(15)+X keV 73 104 ABC |Ta-177 |56.56(6) h                 |7/2+ 73 104 AD |Ta-177m1|410(7) ns                  |9/2-             |73.36(15) keV 73 104 AD |Ta-177m2|3.62(10) µs                |5/2-             |186.15(6) keV 73 104 AD |Ta-177m3|5.31(25) µs                |21/2-            |1355.01(19) keV 73 104 AD |Ta-177m4|133(4) µs                  |49/2-            |4656.3(5) keV 73 105 AB |Ta-178  |9.31(3) min                |1+ 73 105 C  |Ta-178  |9.29 min                   |1+ 73 105 D  |Ta-178m |9.31(3) min                |1+               |Y+0 keV 73 105 E  |Ta-178m |2.36(8) h                  |(7)-             |X+0 keV 73 105 A  |Ta-178m |2.36(8) h                  |(7)-             |100(50)# keV 73 105 C  |Ta-178m |2.4 h                      |(7-) 73 105 A  |Ta-178m |59(3) ms                   |(15-)            |1570(50)# keV 73 105 D  |Ta-178m |60(5) ms                   |(15-)            |X+1470.6 keV 73 105 A  |Ta-178m |290(12) ms                 |(21-)            |3000(50)# keV 73 106 ABC |Ta-179 |1.82(3) a                  |7/2+ 73 106 D  |Ta-179m1|1.42(8) µs                 |(9/2)-           |30.7(1) keV 73 106 D  |Ta-179m2|335(45) ns                 |(1/2)+           |520.23(18) keV 73 106 D  |Ta-179m3|322(16) ns                 |(21/2-)          |1252.61(23) keV 73 106 AD |Ta-179m4|9.0(2) ms                  |(25/2+)          |1317.3(4) keV 73 106 D  |Ta-179m5|1.6(4) µs                  |(23/2-)          |1327.9(4) keV 73 106 AD |Ta-179m6|54.1(17) ms                |(37/2+)          |2639.3(5) keV 73 107 AC |Ta-180  |8.152(6) h                 |1+ 73 107 B  |Ta-180  |8.154(6) h                 |1+ 73 107 A  |Ta-180m1|STABLE [>1.2E+15 a]        |9-               |75.3(13) keV 73 107 E  |Ta-180m1|>1.2E+15 a                 |9-               |77.1(8) keV 73 107 C  |Ta-180m1|>1.2E+15 a                 |(9-) 73 107 A  |Ta-180m2|45(2) µs                   |15-              |1451.0(10) keV 73 107 D  |Ta-180m2|31.2(14) µs                |15-              |1452.40(18) keV 73 107 D  |Ta-180m3|2.0(5) µs                  |(22-)            |3679.0(11) keV 73 107 D  |Ta-180m4|17(5) µs                   |(23,24,25)       |4171.0+X keV 73 108 ABC |Ta-181 |STABLE                     |7/2+ 73 108 AD |Ta-181m1|6.05(12) µs                |9/2-             |6.238(20) keV 73 108 D  |Ta-181m2|18(1) µs                   |1/2+             |615.21(3) keV 73 108 A  |Ta-181m3|25(2) µs                   |21/2-            |1485(3) keV 73 108 A  |Ta-181m4|210(20) µs                 |29/2-            |2230(3) keV 73 109 ABC |Ta-182 |114.43(3) d                |3- 73 109 AE |Ta-182m2|15.84(10) min              |10-              |519.572(18) keV 73 109 C  |Ta-182m2|15.8 min                   |10- 73 109 AE |Ta-182m1|283(3) ms                  |5+               |16.263(3) keV 73 110 ABC |Ta-183 |5.1(1) d                   |7/2+ 73 110 A  |Ta-183m |107(11) ns                 |9/2-             |73.174(12) keV 73 110 D  |Ta-183m |107(11) ns                 |(9/2)-           |73.174(12) keV 73 111 ABC |Ta-184 |8.7(1) h                   |(5-) 73 112 ABC |Ta-185 |49.4(15) min               |(7/2+)# 73 112 A  |Ta-185m |>1 ms                      |(21/2-)          |1308(29) keV 73 113 AB |Ta-186  |10.5(3) min                |(2-,3-) 73 113 C  |Ta-186  |10.5 min                   |(3-) 73 113 B  |Ta-186m |1.54(5) min                |                 |0 MeV 73 114 A  |Ta-187  |2# min [>300 ns]           |7/2+# 73 114 B  |Ta-187  |~2 min                     | 73 115 A  |Ta-188  |20# s [>300 ns]            | 73 115 B  |Ta-188  |~20 s                      | 73 116 A  |Ta-189  |3# s [>300 ns]             |7/2+# 73 116 B  |Ta-189  |3# s                       |(7/2+) 73 117 AB |Ta-190  |0.3# s                     |

Femto 12:57, 16 November 2005 (UTC)

Talk
Yeah!  Said: Rursus   ☻   13:07, 25 May 2008 (UTC)

Killing the bug
The article confusingly said:
 * 180mTa is the only naturally occurring nuclear isomer (excluding radiogenic and cosmogenic short-living nuclides). It is also the rarest isotope in the Universe, taking into account the elemental abundance of tantalum and isotopic abundance of 180mTa in the natural mixture of isotopes.

Depends on how to take into account ... I'm not going to analyze the statement, just stating that: of the naturally occurring elements, 180mTa is by no means the rarest nuclide. That goes to some nuclide that we can compute must exist in nature by some weird nuclear process (cold neutron capture from SF 238U some such), but we have no chance in the universe to detect by our current technology. It's the rarest primordial (generated by Big Bang, any supernova or some double neutron star collision or so, and then remaining for some 108 or so) isotope of all elements that have at least one stable isotope. Circa true, even though a few primordial Al-26 atoms may remain from the Solar System birth supernovae...  Said: Rursus   ☻   13:07, 25 May 2008 (UTC)

Table styles
Isn't there a way to have the table apply the style across the whole column, rather than specifying the same style every time in every cell? That gets old fast. &mdash;Długosz (talk) 23:05, 12 October 2009 (UTC)