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MADMADS12 MADMADS12
  • 08-09-2016
  • Physics
Answered

What is the half life of each of these radioactive isotopes?

a radioactive isotope decreased to one-fourth its original amount in 18 months.

Verified Answer :

AL2006
AL2006 AL2006
  • 08-09-2016


One fourth means  (one half)  of  (one half)  .

So the 18 months must be two half-lifes.

The half-life of this particular isotope is  9 months.

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OldGregg OldGregg
  • 08-09-2016

The half life would be 9 months long.

Answer Link

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