Radioactive Elements and Isotopes
Chemical Properties, Physical Properties and General Information
|
| Name | Sym. | Atomic
Number | Atomic
Weight | Occurrence | Useful Isotopes Use & Applications |
| Technetium | Tc | 43 | 98 | Synthetic | 99mTc (nuclear medicine) |
| Promethium | Pm | 61 | 145 | Synthetic | 145Pm (radiation source for thickness gauges); 147Pm (nuclear batteries) |
| Polonium | Po | 84 | 209 | From Decay | 210Po (nuclear weapons, thermoelectricity) |
| Astatine | At | 85 | 210 | Synthetic | none |
| Radon | Rn | 86 | 222 | From Decay | 222Rn (cancer radiation therapy, hydrologic research) |
| Francium | Fr | 87 | 223 | From Decay | none |
| Radium | Ra | 88 | 226 | From Decay | 226Ra (formerly used for treatment of cancer and other diseases, self-luminous paints, neutron sources) |
| Actinium | Ac | 89 | 227 | From Decay | 225Ac (neutron source, radio-immunotherapy) |
| Thorium | Th | 90 | 232.03806 | Primordial | 232Th (alloying in magnesium, Welsbach mantles, nuclear fuel, dating) |
| Protactinium | Pa | 91 | 231.03588 | Synthetic | none |
| Uranium | U | 92 | 238.02891 | Primordial | 235U, 238U (nuclear energy & weapons) |
| Transuranium Elements |
| Neptunium | Np | 93 | 237 | From Decay | 237Np (precursor in Pu-238 production for spacecraft and military) |
| Plutonium | Pu | 94 | 244 | From Decay | 239Pu (nuclear weapons) 238Pu (electrical power) |
| Americium | Am | 95 | 243 | Synthetic | 241Am (gamma radiography, glass thickness gauge, smoke detectors); 242Am (neutron radiography) |
| Curium | Cm | 96 | 247 | Synthetic | 242Cm, 244Cm (possible uses as a thermoelectric power source) |
| Berkelium | Bk | 97 | 247 | Synthetic | none |
| Californium | Cf | 98 | 251 | Synthetic | 252Cf (gold and silver ores identification, neutron moisture gauges to find water and oil bearing layers in oil wells) |
| Einsteinium | Es | 99 | 252 | Synthetic | none |
| Fermium | Fm | 100 | 257 | Synthetic | none |
| Mendelevium | Md | 101 | 258 | Synthetic | none |
| Nobelium | No | 102 | 259 | Synthetic | none |
| Lawrencium | Lr | 103 | 262 | Synthetic | none |
| Rutherfordium | Rf | 104 | 261 | Synthetic | none |
| Dubnium | Db | 105 | 262 | Synthetic | none |
| Seaborgium | Sg | 106 | 266 | Synthetic | none |
| Bohrium | Bh | 107 | 264 | Synthetic | none |
| Hassium | Hs | 108 | 277 | Synthetic | none |
| Meitnerium | Mt | 109 | 268 | Synthetic | none |
| Darmstadtium | Ds | 110 | 271 | Synthetic | none |
| Roentgenium | Rg | 111 | 272 | Synthetic | none |
| Copernicium | Cn | 112 | 285 | Synthetic | none |
| Ununtrium | Uut | 113 | 284 | Synthetic | none |
| Ununquadium | Uuq | 114 | 289 | Synthetic | none |
| Ununpentium | Uup | 115 | 288 | Synthetic | none |
| Ununhexium | Uuh | 116 | 292 | Synthetic | none |
| Ununseptium | Uus | 117 | 294 ? | Synthetic | none |
| Ununoctium | Uuo | 118 | 294 | Synthetic | none |
Chemistry Quick Facts
