We measure the activity of a radioactive isotope in bequerels (Bq), I e. no of disintegrations per sec

We measure the activity of a radioactive isotope in BEQUERELS (Bq), i.e. no of disintegrations per sec.

• We measure the activity of a radioactive isotope in BEQUERELS (Bq), i.e. no of disintegrations per sec.

• Use the table to draw the half-life graph of Iodine-128.

Using a similar reasoning to the discussion on half-life and number of undecayed atoms N, we can conclude that:

• Using a similar reasoning to the discussion on half-life and number of undecayed atoms N, we can conclude that:

• Where A is the activity (in Bq) at time t, A0 is the activity for t = 0 and x the number of half-lives elapsed.

A very useful equation is the relationship between the activity of a radioactive nuclide and the number of radioactive atoms:

• A very useful equation is the relationship between the activity of a radioactive nuclide and the number of radioactive atoms: