Give the relation between half life and mean life

Spontaneous and continuous disintegrationof a nucleus of aheavy element with the emission of certain types of radiation is known as radioactivity:-Write the relation connecting half-life and mean life of radioactive element.

Write the relation between half life t_(1/2) and rate constant (k)of a first order reaction .

Write the expression,for half life of the reaction between hydrogen and chlorine to form hydrochloric acid gas?

Derive theintegratedrateequation for the First order reaction and give the expression for half-life of reaction.

If 'a' is the initial concentration of the reactant, the half-life period of the reaction of nth order is inversely proportional to: