After time the number of radium atoms will be times its original number, where is the half-life time. In our case, , and . Since the radioactivity is proportional to the number of radioactive atoms, it will decrease 8 times and, therefore, will constitute 200/8 = 25 bq. The answer is: 25 bq.
Comments
There are so many method in solving this ,thank you this helped me to know more
THIS IS SO HELPFUL, THANK YOU!!!!
Leave a comment