Elements With No Primordial Isotopes
| Z |
Element |
t1/2 of | Longest lived isotope |
|---|---|---|---|
| 96 | curium | 1.56×107 a | 247Cm |
| 43 | technetium | 4.2×106 a | 98Tc |
| 93 | neptunium | 2.144×106 a | 237Np |
| 91 | protactinium | 32,760 a | 231Pa |
| 95 | americium | 7,370 a | 243Am |
| 88 | radium | 1,602 a | 226Ra |
| 97 | berkelium | 1,380 a | 247Bk |
| 98 | californium | 898 a | 251Cf |
| 84 | polonium | 103 a | 209Po |
| 89 | actinium | 21.77 a | 227Ac |
| 61 | promethium | 17.7 a | 145Pm |
| 99 | einsteinium | 1.29 a | 252Es |
| 100 | fermium | 100.5 d | 257Fm |
| 101 | mendelevium | 51.5 d | 258Md |
| 86 | radon | 3.82 d | 222Rn |
| 105 | dubnium | 1.3 d | 268Db |
| Z |
Element |
t1/2 of | Longest lived isotope |
|---|---|---|---|
| 103 | lawrencium | 10 h | 264Lr |
| 85 | astatine | 8.1 h | 210At |
| 107 | bohrium | 1.5 h | 273Bh |
| 104 | rutherfordium | 1.3 h | 265Rf |
| 106 | seaborgium | 1 h | 272Sg |
| 108 | hassium | 1 h | 276Hs |
| 102 | nobelium | 58 min | 259No |
| 87 | francium | 22.0 min | 223Fr |
| 113 | ununtrium | 20 min | 287Uut |
| 111 | roentgenium | 10 min | 283Rg |
| 109 | meitnerium | 6 min | 279Mt |
| 115 | ununpentium | 1 min | 291Uup |
| 112 | copernicium | 34 s | 285Cn |
| 110 | darmstadtium | 10 s | 278Ds |
| 114 | flerovium | 2.7 s | 289Fl |
| 116 | livermorium | 5.3×10−2 s | 293Lv |
| 117 | ununseptium | 7.8×10−2 s | 294Uus |
| 118 | ununoctium | 8.9×10−4 s | 294Uuo |
Read more about this topic: List Of Elements By Stability Of Isotopes
Famous quotes containing the words elements and/or primordial:
“An illustrious individual remarks that Mrs. [Elizabeth Cady] Stanton is the salt, Anna Dickinson the pepper, and Miss [Susan B.] Anthony the vinegar of the Female Suffrage movement. The very elements get the “white male” into a nice pickle.”
—Anonymous, U.S. women’s magazine contributor. The Revolution (August 19, 1869)
“Like Freud, Jung believes that the human mind contains archaic remnants, residues of the long history and evolution of mankind. In the unconscious, primordial “universally human images” lie dormant. Those primordial images are the most ancient, universal and “deep” thoughts of mankind. Since they embody feelings as much as thought, they are properly “thought feelings.” Where Freud postulates a mass psyche, Jung postulates a collective psyche.”
—Patrick Mullahy (b. 1912)