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AIATS -7 Practice Test (Code A) 21. In an ore at the time of estimation, the ratio of U238 to.Pb206 is 1:7. Calculate the age of ore, assuming thatall the lead present in the ore is the final stable productof U238. (Half life of U238 = 4.5 * 10 years)(1) 1.87* 109 yr 2 13.5 * 109 yr(3) 8.5 x 109 yr (4) 9* 10º yr​

Answer»

Total age of the GIVEN ore isExplanation:If the ratio of U238 and Pb206 in the given ore is 1 : 7so we can say that the fraction of U PRESENT at that time isso it is three TIMES the half lifeso we will havegiven thatso we will have#LearnTopic : Half lifebrainly.in/question/15713062



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