1.

Find the decay constant of .^(55)Co radio nuclide if its activity is known to decrease 4% per hour. The decay product is non-radioactive.

Answer»


SOLUTION :`t_("AVG")=(1)/(lambda) " " lambda xx 1 =ln(100)/(96) " " lambda=0.04 HR^(-1)`
`t_("avg")=(1)/(lambda)=25 xx60 xx=1500`


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