A `3//4` of the original amount of radioisotope decays in 60 minutes.What is its half life?

65% of .^111In sample decays in 4.2 d.What is it half life?

0.5 g Sample of .^201TI decays to 0.07888 g in 8 days.What is its half life?

Half life of .^24Na is a900 minutes.What is its decay constant?

A radioactive substance decays to [1/16^(th)] of its initial quantity in 108 minutes. Find its half line

Decay constant of .^197Hg is 0.017 h^(-1) .What is its half life?

In a first order reaction 60% of the reactant decomposes in 45minutes.Calculate the half life for the reaction.