thorium series meaning in Hindi

Examples

1. 208 Pb is the end of the Thorium series from 232 Th.
2. Its decay chain is the thorium series eventually ending in lead-208.
3. The peak of thorium series can be found at 2.62 MeV and the Uranium series at 1.76 MeV.
4. Radon mostly appears with the decay chain of the radium and uranium series ( 222 Rn ), and marginally with the thorium series ( 220 Rn ).
5. The properties he reported for dakin do not correspond to those of astatine; moreover, astatine is not found in the thorium series, and the true identity of dakin is not known.
6. Such " decay series ", such as the uranium-radium and thorium series, were known within a few years of the discovery of radioactivity, and provided a basis for constructing techniques of radiometric dating.
7. The three isotopes lead-206, lead-207, and lead-208 represent the ends of three decay chains : the uranium series ( or radium series ), the actinium series, and the thorium series, respectively.
8. 232 Th is the longest-lived isotope in the 4 " n " decay chain which includes isotopes with a mass number divisible by 4 ( hence the name : it is also called the thorium series after its progenitor ).
9. Three main decay chains ( or families ) are observed in nature, commonly called the thorium series, the radium or uranium series, and the actinium series, representing three of these four classes, and ending in three different, stable isotopes of lead.
10. The Later Stone Age sequence has been radiocarbon dated to 2000 290 years BP, uranium-thorium series ( U / Th ) The lowest levels of the M3 phase has a preliminary age of > 130, 000 years ago, while the unexcavated sediments below these levels remains undated ( June 2013 ).