`._(92)U^(238)`  is radioactive and it emits `alpha` and `beta` particles to form `._(82)Pb^(206)
Channel: Doubtnut
Date: 2020-08-23

`._(92)U^(238)`  is radioactive and it emits `alpha` and `beta` particles to form `._(82)Pb^(206).` Calculate the number of `alpha` and `beta` particles emitted in this conversion.  An ore of `._(92)U^(238)` is found ot contain `._(92)U^(238)` and `_(82)Pb^(206)` in the weight ratio of `1: 0.1.` The half- life -period of `._(92)U^(238)` is `4.5xx 10^(9) yr.` Calculate the age of the ore.