Half-Life
 

Half-Life problem 15


The half-life for lead-202 is 52,500 years. A sample of lead-202 produces . How long will it take for the count rate to drop to ?


  • 105,000 years

  • 157,500 years

  • 210,000 years

  • 420,000 years


 

main author and content editor: Jamiu Amusa