Lead Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
178Pb | 178.003830 (26) |
| 230 | us | 3,568 (24) | 7,690.9 (1.4) | A~100 |
|
179Pb | 179.00215 (21) |
| 3 | ms | 2,000 (200) | 7,702 (1) | A ? |
|
180Pb | 179.997918 (22) |
| 5 | ms | -1,939 (21) | 7,725.7 (1.2) | A | 100 |
181Pb | 180.996624 (97) |
| 45 | ms | -3,145 (90) | 7,734.3 (5) | A | ? |
182Pb | 181.992672 (15) |
| 60 | ms | -6,826 (14) | 7,756.34 (7.7) | A | ? |
183Pb | 182.991875 (30) |
| 535 | ms | -7,569 (28) | 7,762.1 (1.5) | A | ? |
184Pb | 183.988142 (15) |
| 490 | ms | -11,045 (14) | 7,782.69 (7.8) | A | 80 15 |
185Pb | 184.987610 (17) |
| 6.3 | s | -11,541 (16) | 7,786.93 (8.7) | A | 50 25 |
186Pb | 185.984239 (12) |
| 4.82 | s | -14,681 (11) | 7,805.34 (6.1) | B+ ? |
|
187Pb | 186.9839184 (89) |
| 15.2 | s | -14,979.9 (8.3) | 7,808.36 (4.4) | B+ | 93 2 |
188Pb | 187.980874 (11) |
| 25.5 | s | -17,815 (11) | 7,824.84 (5.7) | B+ | ? |
189Pb | 188.980807 (37) |
| 51 | s | -17,878 (34) | 7,826.5 (1.8) | B+>99 |
|
190Pb | 189.978082 (13) |
| 71 | s | -20,417 (12) | 7,841.13 (6.4) | B+ ? |
|
191Pb | 190.978265 (42) |
| 1.33 | m | -20,246 (39) | 7,841.4 (2) | B+~100 |
|
192Pb | 191.975785 (14) |
| 3.5 | m | -22,556 (13) | 7,854.67 (6.6) | B+~100 |
|
193Pb | 192.976173 (53) |
| 5 | m | -22,194 (50) | 7,853.9 (2.6) | B+ ? |
|
194Pb | 193.974012 (19) |
| 12 | m | -24,208 (17) | 7,865.42 (9) | B+ | 100 |
195Pb | 194.974542 (25) |
| ~15 | m | -23,714 (23) | 7,863.9 (1.2) | B+ | 100 |
196Pb | 195.972774 (15) |
| 37 | m | -25,361 (14) | 7,873.40 (7.3) | B+ | 100 |
197Pb | 196.9734311 (60) |
| 8 | m | -24,748.7 (5.6) | 7,871.30 (2.8) | B+ | |
198Pb | 197.972034 (16) |
| 2.4 | h | -26,050 (15) | 7,878.88 (7.4) | B+ | 100 |
199Pb | 198.972917 (28) |
| 90 | m | -25,228 (26) | 7,875.7 (1.3) | B+ | 100 |
200Pb | 199.971827 (12) |
| 21.5 | h | -26,243 (11) | 7,881.77 (5.5) | EC | 100 |
201Pb | 200.972885 (24) |
| 9.33 | h | -25,258 (22) | 7,877.8 (1.1) | B+ | 100 |
202Pb | 201.9721591 (88) |
| 52.5 | ky | -25,933.6 (8.2) | 7,882.12 (4) | EC~100 |
|
203Pb | 202.9733905 (70) |
| 51.873 | h | -24,786.6 (6.5) | 7,877.40 (3.2) | EC | 100 |
204Pb | 203.9730436 (13) | 1.4 (1) | stable |
| -25,109.7 (1.2) | 7,879.931 (6) |
|
|
205Pb | 204.9744818 (13) |
| 15.3 | My | -23,770.1 (1.2) | 7,874.330 (6) | EC | 100 |
206Pb | 205.9744653 (13) | 24.1 (1) | stable |
| -23,785.4 (1.2) | 7,875.361 (6) |
|
|
207Pb | 206.9758969 (13) | 22.1 (1) | stable |
| -22,451.9 (1.2) | 7,869.865 (6) |
|
|
208Pb | 207.9766521 (13) | 52.4 (1) | stable |
| -21,748.5 (1.2) | 7,867.452 (6) |
|
|
209Pb | 208.9810901 (19) |
| 3.253 | h | -17,614.4 (1.8) | 7,848.647 (9) | B- | 100 |
210Pb | 209.9841885 (16) |
| 22.2 | y | -14,728.3 (1.5) | 7,835.964 (7) | B- | 100 |
211Pb | 210.9887370 (29) |
| 36.1 | m | -10,491.5 (2.7) | 7,817.00 (1.3) | B- | 100 |
212Pb | 211.9918975 (24) |
| 10.64 | h | -7,547.4 (2.2) | 7,804.31 (1) | B- | 100 |
213Pb | 212.9965815 (84) |
| 10.2 | m | -3,184.3 (7.8) | 7,785.08 (3.7) | B- | 100 |
214Pb | 213.9998054 (26) |
| 26.8 | m | -181.3 (2.4) | 7,772.39 (1.1) | B- | 100 |
215Pb | 215.00481 (44) |
| 36 | s | 4,480 (410) | 7,752 (2) | B- | 100 |
181mPb | 180.996624 (97) |
| & |
| -3,145 (90) | 7,734.3 (5) | 0 |
|
183mPb | 182.991875 (30) |
| 415 | ms | -7,569 (28) | 7,762.1 (1.5) | A~100 |
|
185mPb | 184.987610 (17) |
| 4.07 | s | -11,541 (16) | 7,786.93 (8.7) | A | 50 25 |
187mPb | 186.9839184 (89) |
| 18.3 | s | -14,979.9 (8.3) | 7,808.36 (4.4) | B+ | 88 2 |
188mPb | 187.980874 (11) |
| 830 | ns | -17,815 (11) | 7,824.84 (5.7) | IT | 100 |
189mPb | 188.980807 (37) |
| 1 | m | -17,878 (34) | 7,826.5 (1.8) | B+ ? |
|
190mPb | 189.978082 (13) |
| 150 | ns | -20,417 (12) | 7,841.13 (6.4) | IT | 100 |
191mPb | 190.978265 (42) |
| 2.18 | m | -20,246 (39) | 7,841.4 (2) | B+~100 |
|
192mPb | 191.975785 (14) |
| 164 | ns | -22,556 (13) | 7,854.67 (6.6) | IT | 100 |
193mPb | 192.976173 (53) |
| 5.8 | m | -22,194 (50) | 7,853.9 (2.6) | B+ | 100 |
195mPb | 194.974542 (25) |
| 15 | m | -23,714 (23) | 7,863.9 (1.2) | B+ | 100 |
196mPb | 195.972774 (15) |
| <1 | us | -25,361 (14) | 7,873.40 (7.3) | IT | 100 |
197mPb | 196.9734311 (60) |
| 43 | m | -24,748.7 (5.6) | 7,871.30 (2.8) | B+ | 81 2 |
198mPb | 197.972034 (16) |
| 4.19 | us | -26,050 (15) | 7,878.88 (7.4) | IT | 100 |
199mPb | 198.972917 (28) |
| 12.2 | m | -25,228 (26) | 7,875.7 (1.3) | IT | 93 |
201mPb | 200.972885 (24) |
| 61 | s | -25,258 (22) | 7,877.8 (1.1) | IT>99 |
|
202mPb | 201.9721591 (88) |
| 3.53 | h | -25,933.6 (8.2) | 7,882.12 (4) | IT | 90.5 5 |
203mPb | 202.9733905 (70) |
| 6.3 | s | -24,786.6 (6.5) | 7,877.40 (3.2) | IT | 100 |
204mPb | 203.9730436 (13) |
| 67.2 | m | -25,109.7 (1.2) | 7,879.931 (6) | IT | 100 |
205mPb | 204.9744818 (13) |
| 5.54 | ms | -23,770.1 (1.2) | 7,874.330 (6) | IT | 100 |
206mPb | 205.9744653 (13) |
| 125 | us | -23,785.4 (1.2) | 7,875.361 (6) | IT | 100 |
207mPb | 206.9758969 (13) |
| 806 | ms | -22,451.9 (1.2) | 7,869.865 (6) | IT | 100 |
208mPb | 207.9766521 (13) |
| 500 | ns | -21,748.5 (1.2) | 7,867.452 (6) | IT | 100 |
210mPb | 209.9841885 (16) |
| 201 | ns | -14,728.3 (1.5) | 7,835.964 (7) | IT | 100 |
212mPb | 211.9918975 (24) |
| 5 | us | -7,547.4 (2.2) | 7,804.31 (1) | IT | 100 |
188m1Pb | 187.980874 (11) |
| 94 | ns | -17,815 (11) | 7,824.84 (5.7) | IT | 100 |
190m1Pb | 189.978082 (13) |
| 25 | us | -20,417 (12) | 7,841.13 (6.4) | IT ? |
|
192m1Pb | 191.975785 (14) |
| 1.1 | us | -22,556 (13) | 7,854.67 (6.6) | IT | 100 |
197m1Pb | 196.9734311 (60) |
| 1.15 | us | -24,748.7 (5.6) | 7,871.30 (2.8) | IT | 100 |
199m1Pb | 198.972917 (28) |
| 10.1 | us | -25,228 (26) | 7,875.7 (1.3) | IT | 100 |
203m1Pb | 202.9733905 (70) |
| 480 | ms | -24,786.6 (6.5) | 7,877.40 (3.2) | IT | 100 |
205m1Pb | 204.9744818 (13) |
| 217 | ns | -23,770.1 (1.2) | 7,874.330 (6) | IT | 100 |
206m1Pb | 205.9744653 (13) |
| 202 | ns | -23,785.4 (1.2) | 7,875.361 (6) | IT | 100 |
188m2Pb | 187.980874 (11) |
| 797 | ns | -17,815 (11) | 7,824.84 (5.7) | IT | 100 |
190m2Pb | 189.978082 (13) |
| 7.2 | us | -20,417 (12) | 7,841.13 (6.4) | IT | 100 |
192m2Pb | 191.975785 (14) |
| 756 | ns | -22,556 (13) | 7,854.67 (6.6) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005