We appreciate your visit to Suppose you have a 100 g sample of iridium 182 which undergoes beta decay to form osmium 182 The half life of iridium 182 is. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
Final answer:
After 60 minutes or four half-lives, only 6.25g of the initial 100g iridium-182 sample would remain, as it undergoes beta decay with a half-life of 15 minutes.
Explanation:
The question refers to the process of beta decay occurring in a sample of iridium-182. Beta decay is a type of radioactive decay where a beta particle is emitted from an unstable nucleus, causing the element to transmute into a new element—in this case, from iridium to osmium. The rate at which this decay happens is characterized by the half-life, which is the time it takes for half of a sample of the element to decay.In this instance, the half-life of iridium-182 is 15 minutes. Hence, after 15 minutes (one half-life), 50% of the original 100g sample would remain undecayed, i.e., 50g of iridium-182. After another 15 minutes (a total of 30 minutes, or two half-lives), this 50g would further reduce by half to 25g. After 45 minutes (three half-lives), 12.5g would remain. Finally, after 60 minutes or four half-lives, the amount of iridium in the sample would halve again, leaving 6.25g. So, the answer is c. 6.25.
Learn more about Radioactive Decay here:
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