Nuclear Chemistry

The half life of a first order reaction is 2000 years. If the concentration after 8000 years is 0.02 M, then the initial concentration was :

A nuclide of an alkaline earth metal undergoes radioactive decay by emission of the periodic table to which the resulting daughter element would belong is

The radioactive isotope \({}_{27}^{60}\)Co which is used in the treatment of cancer can be made by (n.p) reaction. For this reaction the tarfet nucleus is

The radioistope, tritium (\({}_1^3\)H) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg, how many milligrams of it would remain after 49.2 years?

\({}_{92}^{235}\)U, nucleus absorbs a neutron and distintegrate in \({}_{54}^{139}\)Xe, \({}_{38}^{94}\)Sr and \(x\) so, what will be product \(x\)?

A human body required 0.01 m activity of radioactive substance after 24 hours. Half life of radioactive substance is 6 hours. Then inhection of maximum activity of radioactive substance that can be injected is

If a \({}_b^aX\) species emits first a position, then two a and two b particles and in the last, one a, is also emitted and gets converts to \({}_d^c\)Y species. So correct relation is

A 300 grams radioactive sample at initial half life is 3 hours. After 18 hours remaining quantity