Tungsten Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
158W | 157.97456 (54) |
| 1.37 | ms | -23,700 (500) | 7,855 (3) | A | 100 |
159W | 158.97292 (43) |
| 8.2 | ms | -25,230 (400) | 7,866 (3) | A | 82 16 |
160W | 159.96848 (22) |
| 90 | ms | -29,360 (210) | 7,893 (1.3) | A | 87 8 |
161W | 160.96736 (21) |
| 409 | ms | -30,410 (200) | 7,901 (1) | A | 73 3 |
162W | 161.963497 (19) |
| 1.36 | s | -34,002 (18) | 7,923.8 (1.1) | B+ ? |
|
163W | 162.962524 (57) |
| 2.8 | s | -34,909 (53) | 7,930.3 (3.2) | B+ ? |
|
164W | 163.958954 (13) |
| 6.3 | s | -38,234 (12) | 7,951.44 (7.2) | B+ | 96.2 12 |
165W | 164.958280 (27) |
| 5.1 | s | -38,862 (25) | 7,956.0 (1.5) | B+~100 |
|
166W | 165.955027 (11) |
| 19.2 | s | -41,892 (10) | 7,974.92 (6.3) | B+~100 |
|
167W | 166.954816 (21) |
| 19.9 | s | -42,089 (19) | 7,976.7 (1.2) | B+ | 99.96 1 |
168W | 167.951808 (17) |
| 51 | s | -44,890 (16) | 7,993.92 (9.7) | B+~100 |
|
169W | 168.951779 (17) |
| 76 | s | -44,918 (15) | 7,994.54 (9.1) | B+ | 100 |
170W | 169.949228 (16) |
| 2.42 | m | -47,293 (15) | 8,008.96 (8.9) | B+~100 |
|
171W | 170.949451 (30) |
| 2.38 | m | -47,086 (28) | 8,008.1 (1.6) | B+ | 100 |
172W | 171.947292 (30) |
| 6.6 | m | -49,097 (28) | 8,020.2 (1.6) | B+ | 100 |
173W | 172.947689 (30) |
| 7.6 | m | -48,727 (28) | 8,018.3 (1.6) | B+ | 100 |
174W | 173.946079 (30) |
| 33.2 | m | -50,227 (28) | 8,027.3 (1.6) | B+ | 100 |
175W | 174.946717 (30) |
| 35.2 | m | -49,633 (28) | 8,024.1 (1.6) | B+ | 100 |
176W | 175.945634 (30) |
| 2.5 | h | -50,642 (28) | 8,030.1 (1.6) | EC | 100 |
177W | 176.946643 (30) |
| 132 | m | -49,702 (28) | 8,025.0 (1.6) | B+ | |
178W | 177.945876 (16) |
| 21.6 | d | -50,416 (15) | 8,029.31 (8.6) | EC | 100 |
179W | 178.947070 (17) |
| 37.05 | m | -49,304 (16) | 8,023.33 (8.7) | B+ | 100 |
180W | 179.9467045 (42) | 0.12 (1) | stable |
| -49,644.5 (3.9) | 8,025.49 (2.2) |
|
|
181W | 180.9481972 (51) |
| 121.2 | d | -48,254.0 (4.7) | 8,018.06 (2.6) | EC | 100 |
182W | 181.94820416 (89) | 26.50 (16) | stable |
| -48,247.52 (83) | 8,018.316 (5) |
|
|
183W | 182.95022295 (88) | 14.31 (4) | stable |
| -46,367.02 (82) | 8,008.330 (5) |
|
|
184W | 183.95093119 (92) | 30.64 (2) | stable |
| -45,707.30 (86) | 8,005.087 (5) |
|
|
185W | 184.95341926 (97) |
| 75.1 | d | -43,389.68 (90) | 7,992.917 (5) | B- | 100 |
186W | 185.9543641 (19) | 28.43 (19) | stable |
| -42,509.5 (1.7) | 7,988.607 (9) |
|
|
187W | 186.9571605 (19) |
| 23.72 | h | -39,904.8 (1.7) | 7,975.120 (9) | B- | 100 |
188W | 187.9584891 (36) |
| 69.78 | d | -38,667.2 (3.3) | 7,969.05 (1.8) | B- | 100 |
189W | 188.96191 (21) |
| 11.6 | m | -35,480 (200) | 7,953 (1.1) | B- | 100 |
190W | 189.96318 (18) |
| 30 | m | -34,300 (160) | 7,947.1 (8.7) | B- | 100 |
191W | 190.96660 (21) |
| 20 | s | -31,110 (200) | 7,931 (1) | B- ? |
|
192W | 191.96817 (64) |
| 10 | s | -29,650 (600) | 7,924 (3) | B- ? |
|
158mW | 157.97456 (54) |
| 143 | us | -23,700 (500) | 7,855 (3) | A | 100 |
179mW | 178.947070 (17) |
| 6.4 | m | -49,304 (16) | 8,023.33 (8.7) | IT~100 |
|
180mW | 179.9467045 (42) |
| 5.47 | ms | -49,644.5 (3.9) | 8,025.49 (2.2) | IT | 100 |
183mW | 182.95022295 (88) |
| 5.2 | s | -46,367.02 (82) | 8,008.330 (5) | IT | 100 |
185mW | 184.95341926 (97) |
| 1.597 | m | -43,389.68 (90) | 7,992.917 (5) | IT | 100 |
186mW | 185.9543641 (19) |
| 18 | us | -42,509.5 (1.7) | 7,988.607 (9) | IT | 100 |
190mW | 189.96318 (18) |
| <3.1 | ms | -34,300 (160) | 7,947.1 (8.7) | IT | 100 |
186m1W | 185.9543641 (19) |
| >3 | ms | -42,509.5 (1.7) | 7,988.607 (9) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005