Radon Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
195Rn | 195.005438 (55) |
| 6 | ms | 5,065 (51) | 7,700.3 (2.6) | A | ? |
196Rn | 196.002115 (16) |
| 4.7 | ms | 1,970 (15) | 7,717.99 (7.7) | A~100 |
|
197Rn | 197.001584 (65) |
| 66 | ms | 1,476 (61) | 7,722.3 (3.1) | A~100 |
|
198Rn | 197.998679 (14) |
| 65 | ms | -1,231 (13) | 7,737.73 (6.6) | A | ? |
199Rn | 198.998370 (68) |
| 620 | ms | -1,518 (64) | 7,740.8 (3.2) | A | ? |
200Rn | 199.995699 (14) |
| 1.03 | s | -4,006 (13) | 7,754.94 (6.6) | A | ? |
201Rn | 200.995628 (76) |
| 7 | s | -4,072 (71) | 7,756.8 (3.5) | A | ? |
202Rn | 201.993263 (19) |
| 9.94 | s | -6,275 (18) | 7,769.30 (8.7) | A | ? |
203Rn | 202.993387 (25) |
| 43.5 | s | -6,160 (24) | 7,770.2 (1.2) | A | 66 9 |
204Rn | 203.991429 (16) |
| 1.24 | m | -7,984 (15) | 7,780.64 (7.1) | A | 73 1 |
205Rn | 204.991719 (54) |
| 2.8 | m | -7,714 (50) | 7,780.7 (2.5) | B+ | 77 4 |
206Rn | 205.990214 (16) |
| 5.67 | m | -9,116 (15) | 7,788.96 (7.2) | A | 62 3 |
207Rn | 206.990734 (28) |
| 9.25 | m | -8,631 (26) | 7,788.0 (1.3) | B+ | 79 3 |
208Rn | 207.989642 (12) |
| 24.35 | m | -9,648 (11) | 7,794.23 (5.4) | A | 62 7 |
209Rn | 208.990415 (21) |
| 28.5 | m | -8,929 (20) | 7,792.12 (9.6) | B+ | 83 2 |
210Rn | 209.9896962 (92) |
| 2.4 | h | -9,597.9 (8.6) | 7,796.63 (4.1) | A | 96 1 |
211Rn | 210.9906005 (73) |
| 14.6 | h | -8,755.6 (6.8) | 7,793.94 (3.2) | B+ | 72.6 17 |
212Rn | 211.9907035 (34) |
| 23.9 | m | -8,659.6 (3.2) | 7,794.80 (1.5) | A | 100 |
213Rn | 212.9938827 (61) |
| 19.5 | ms | -5,698.3 (5.7) | 7,782.19 (2.7) | A | 100 |
214Rn | 213.9953626 (99) |
| 270 | ns | -4,319.8 (9.2) | 7,777.10 (4.3) | A | |
215Rn | 214.9987455 (83) |
| 2.3 | us | -1,168.6 (7.7) | 7,763.81 (3.6) | A | 100 |
216Rn | 216.0002744 (78) |
| 45 | us | 255.6 (7.3) | 7,758.64 (3.4) | A | 100 |
217Rn | 217.0039277 (45) |
| 540 | us | 3,658.6 (4.2) | 7,744.40 (1.9) | A | 100 |
218Rn | 218.0056013 (25) |
| 35 | ms | 5,217.5 (2.4) | 7,738.75 (1.1) | A | 100 |
219Rn | 219.0094802 (27) |
| 3.96 | s | 8,830.8 (2.5) | 7,723.77 (1.2) | A | 100 |
220Rn | 220.0113940 (24) |
| 55.6 | s | 10,613.4 (2.2) | 7,717.25 (1) | A | 100 |
221Rn | 221.0155368 (63) |
| 25 | m | 14,472.4 (5.9) | 7,701.39 (2.7) | B- | 78 1 |
222Rn | 222.0175777 (25) |
| 3.8235 | d | 16,373.6 (2.4) | 7,694.49 (1.1) | A | 100 |
223Rn | 223.02179 (32) |
| 24.3 | m | 20,300 (300) | 7,679 (1) | B- | 100 |
224Rn | 224.02409 (32) |
| 107 | m | 22,440 (300) | 7,671 (1) | B- | 100 |
225Rn | 225.02844 (32) |
| 4.66 | m | 26,490 (300) | 7,655 (1) | B- | 100 |
226Rn | 226.03089 (43) |
| 7.4 | m | 28,770 (400) | 7,646 (2) | B- | 100 |
227Rn | 227.03541 (45) |
| 20.8 | s | 32,980 (420) | 7,630 (2) | B- | 100 |
228Rn | 228.03799 (44) |
| 65 | s | 35,380 (410) | 7,621 (2) | B- | 100 |
195mRn | 195.005438 (55) |
| 6 | ms | 5,065 (51) | 7,700.3 (2.6) | A | ? |
197mRn | 197.001584 (65) |
| 21 | ms | 1,476 (61) | 7,722.3 (3.1) | A~100 |
|
198mRn | 197.998679 (14) |
| 50 | ms | -1,231 (13) | 7,737.73 (6.6) | A | ? |
199mRn | 198.998370 (68) |
| 320 | ms | -1,518 (64) | 7,740.8 (3.2) | A | ? |
201mRn | 200.995628 (76) |
| 3.8 | s | -4,072 (71) | 7,756.8 (3.5) | A | ? |
203mRn | 202.993387 (25) |
| 26.7 | s | -6,160 (24) | 7,770.2 (1.2) | A | ? |
207mRn | 206.990734 (28) |
| 181 | us | -8,631 (26) | 7,788.0 (1.3) | IT | 100 |
209mRn | 208.990415 (21) |
| 13.4 | us | -8,929 (20) | 7,792.12 (9.6) | 0 |
|
210mRn | 209.9896962 (92) |
| 644 | ns | -9,597.9 (8.6) | 7,796.63 (4.1) | IT ? |
|
214mRn | 213.9953626 (99) |
| 6.5 | ns | -4,319.8 (9.2) | 7,777.10 (4.3) | 0 |
|
210m1Rn | 209.9896962 (92) |
| 1.06 | us | -9,597.9 (8.6) | 7,796.63 (4.1) | IT | 100 |
210m2Rn | 209.9896962 (92) |
| 1.04 | us | -9,597.9 (8.6) | 7,796.63 (4.1) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005