Radioactive disintergation always follow `I` order kinetics and is independent of all external
Channel: Doubtnut
Date: 02/08/2020

Radioactive disintergation always follow `I` order kinetics and is independent of all external factors and is represented by the relation `N = N_(0) e^(-lambda t)` where `lambda`  is decay constant  and `N` atoms are left at time `t`. The radioactive nature of element is expressed in terms of average life numerically equal to decay constant  `(1//lambda)` however all the radioactive do not lose their radioactive nature in thier average  life. The radioactive emission involves `alpha, beta` particles as well as `gamma-` rays.The penertrating  power order is `alpha lt beta lt gamma`. The emissions can perntrate even thick steel walls but are however unable to penttrate `Pb` blocks. The `S` unit fo rate of decay is `dps`.  The completion of radioactive emission from a species takes place in: