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The half life of .^(58)Co is 72 days. Ca...

The half life of `.^(58)Co` is 72 days. Calculate its average life.

Text Solution

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`T_("half")=0.693xx T_("Mean")rArr T_("Mean")=(T_("half"))/(0.693)=(72)/(0.693)=103.8` days.
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Knowledge Check

  • The half life of Co^58 is 72 days its average life is

    A
    103.9 days
    B
    50 days
    C
    200 days
    D
    320 days

  • Half - life of polonium is of

    A
    138 days
    B
    56 days
    C
    13.8 days
    D
    110 days

  • The half life of a first order reaction is

    A
    independent of the initial concentrationof the reactant
    B
    directly proportional to the initial concentra tion of the reactant
    C
    inversely proportional to the initial concentra tion of the reaction
    D
    directly proportional to the square of the initial concenration of the reactant.

    • Similar Questions

    Explore conceptually related problems

    Half life period of lead is

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    The half-life of a radioactive substance is 100 years. Calculate in how many years the activity will decay to 1//10^(th) of its initial value.

    A reaction has a half-life of 10 minutes. Calculate the rate constant for the first order reaction.

    A certain substance decays to 1/32 of its initial activity in 25 days. Calculate its half-life.

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