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in order to decrease radioactive nuclei to one million of its initial number,number of half lives required is

in order to decrease radioactive nuclei to one million of its initial number,number of half lives required is

Grade:12th pass

1 Answers

Vikas TU
14149 Points
5 years ago
Dear Student,
For the firrst order of chemcial kinetics,
t=2.303log(a/a-x)/l
=>t=2.303log(a/a-106)/l
no of half lives=t/t1/2=(2.303log(a/a-106)/l)/(0.693/l) (since t1/2=0.693/l)
no of half lives can be found by substituting a which is the initial number that is not given in the question.
Cheers!!
Regards,
Vikas (B. Tech. 4th year
Thapar University)

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