The time required for the decay of the radioactive element to one half of its original amount is called

**Half-Life Period**. It is denoted by t_{1}_{/}_{2}.Putting these values in equation (iii), we getThus it is evident that t_{1}_{/}_{2} of an element does not depend on the initial amount of radioactive element but depends on the value of l.

_{1}_{/}_{2}of a particular radioactive isotope is a characteristic constant of that isotope. Values of t_{1}_{/}_{2}range from millions of yearsThe disintegration rate is also referred to as activity. The SI unit of radioactivity is becquerel (Bq) named after Antoine Becquerel, which is equal to one disintegration per second. The older unit, curie, named after Marie Curie is still used, One Curie (Ci) is defined as the amount of radioactive isotope that give 3.7 x 10^{1}^{0} disintegrations per second. This is the activity associated with 1g of radium-225 with half - life of 1600 years).

^{1}^{0}disintegration s^{-}^{1}= 3.7 x 10^{1}^{0} Bq.

Need information on Radiocarbon dating.

ReplyDelete