Isotope von Francium
Für Francium sind hier 37 Isotope mit gemessener Halbwertszeit aufgeführt. Francium hat kein stabiles Isotop. Am langlebigsten ist Francium-223 mit einer Halbwertszeit von 22 Minuten.
Alle Isotope
| Isotop | Neutronen | Halbwertszeit | Hauptzerfallsart | Entdeckt |
|---|---|---|---|---|
| Francium-197 | 110 | 2,3 Millisekunden | Alpha-Zerfall | 2013 |
| Francium-198 | 111 | 15 Millisekunden | Alpha-Zerfall | 2013 |
| Francium-199 | 112 | 6,6 Millisekunden | Alpha-Zerfall | 1999 |
| Francium-200 | 113 | 47,5 Millisekunden | Alpha-Zerfall | 1995 |
| Francium-201 | 114 | 62,8 Millisekunden | Alpha-Zerfall | 1980 |
| Francium-202 | 115 | 372 Millisekunden | Alpha-Zerfall | 1980 |
| Francium-203 | 116 | 550 Millisekunden | Alpha-Zerfall | 1967 |
| Francium-204 | 117 | 1,75 Sekunden | Alpha-Zerfall | 1964 |
| Francium-205 | 118 | 3,9 Sekunden | Alpha-Zerfall | 1964 |
| Francium-206 | 119 | etwa 16 Sekunden | Alpha-Zerfall | 1964 |
| Francium-207 | 120 | 14,8 Sekunden | Alpha-Zerfall | 1964 |
| Francium-208 | 121 | 59,1 Sekunden | Alpha-Zerfall | 1964 |
| Francium-209 | 122 | 50,5 Sekunden | Alpha-Zerfall | 1964 |
| Francium-210 | 123 | 3,18 Minuten | Alpha-Zerfall | 1964 |
| Francium-211 | 124 | 3,1 Minuten | Alpha-Zerfall | 1964 |
| Francium-212 | 125 | 20 Minuten | Beta-plus-Zerfall | 1950 |
| Francium-213 | 126 | 34,14 Sekunden | Alpha-Zerfall | 1964 |
| Francium-214 | 127 | 5,51 Millisekunden | Alpha-Zerfall | 1967 |
| Francium-215 | 128 | 90 Nanosekunden | Alpha-Zerfall | 1970 |
| Francium-216 | 129 | 700 Nanosekunden | Alpha-Zerfall | 1970 |
| Francium-217 | 130 | 22 Mikrosekunden | Alpha-Zerfall | 1968 |
| Francium-218 | 131 | 1,4 Millisekunden | Alpha-Zerfall | 1949 |
| Francium-219 | 132 | 22,5 Millisekunden | Alpha-Zerfall | 1948 |
| Francium-220 | 133 | 27,4 Sekunden | Alpha-Zerfall | 1948 |
| Francium-221 | 134 | 4,801 Minuten | Alpha-Zerfall | 1947 |
| Francium-222 | 135 | 14,2 Minuten | Beta-minus-Zerfall | 1975 |
| Francium-223 | 136 | 22 Minuten | Beta-minus-Zerfall | 1939 |
| Francium-224 | 137 | 3,33 Minuten | Beta-minus-Zerfall | 1969 |
| Francium-225 | 138 | 3,95 Minuten | Beta-minus-Zerfall | 1969 |
| Francium-226 | 139 | 48,5 Sekunden | Beta-minus-Zerfall | 1969 |
| Francium-227 | 140 | 2,47 Minuten | Beta-minus-Zerfall | 1972 |
| Francium-228 | 141 | 38 Sekunden | Beta-minus-Zerfall | 1972 |
| Francium-229 | 142 | 50,2 Sekunden | Beta-minus-Zerfall | 1975 |
| Francium-230 | 143 | 19,1 Sekunden | Beta-minus-Zerfall | 1987 |
| Francium-231 | 144 | 17,6 Sekunden | Beta-minus-Zerfall | 1985 |
| Francium-232 | 145 | 5,5 Sekunden | Beta-minus-Zerfall | 1990 |
| Francium-233 | 146 | 900 Millisekunden | Beta-minus-Zerfall | 2010 |