Fr has half life period of

1.	Fr has half life period of
Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/21-293276" style="font-weight:bold;" target="_blank" title="Click to know more about 21">21</a> secs<br/>21minutes <br/> 21 hours<br/>21 days</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html>

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