State radioactive decay law.

The energy required to separate all the nucleons inside a nucleus is called binding energy of the nucleus.

Write an expression for binding energy in terms of mass defect.

The energy required to separate all the nucleons inside a nucleus is called binding energy of the nucleus.

 Draw the graph showing the variation of binding energy per nucleon as a function of mass number.

The energy required to separate all the nucleons inside a nucleus is called binding energy of the nucleus.

Which nucleus posses maximum binding energy per nucleon?

Spontaneous and continuous disintegration of a nucleus of a heavy element with the emission of certain types of radiation is known as radioactivity.

The radioactive isotope $\text{'}\mathrm{D}\text{'}$ decays according to the sequence $\mathrm{D}\stackrel{{\mathrm{\beta }}^{-}}{\to }{\mathrm{D}}_1\stackrel{\mathrm{\alpha }}{\to }{\mathrm{D}}_2$

If the mass number and atomic number of ${\mathrm{D}}_2$ are $172$ and $71$ respectively, what are the: $\left(\mathrm{i}\right)$ Mass number, $\left(\mathrm{ii}\right)$ Atomic number of $\mathrm{D}$.

Spontaneous and continuous disintegration of a nucleus of a heavy element with the emission of certain types of radiation is known as radioactivity.

$\left(\mathrm{b}\right)$ State radioactive decay law.

Spontaneous and continuous disintegration of a nucleus of a heavy element with the emission of certain types of radiation is known as radioactivity.

$\left(\mathrm{c}\right)$ Write the relation connecting half-life and mean life of radioactive element.