Question

1 10) A radioactive substance decayed to of the initial no's after 50 128 days. Find the half-life of radioactive substance. [2074]​

Answer 1

The half-life of a radioactive substance is the amount of time it takes for half of the initial amount of the substance to decay. In this case, the initial number of atoms decayed to half of the initial number after 128 days. So the half-life of the radioactive substance is 128 days.