Chapter 24, Problem 24.142P

(a)

Interpretation Introduction

Interpretation:

Half of the atoms whether remain after each half-life has to be explained.

Concept Introduction:

Half-life: The time required for the concentration of a reactant to decrease to one half of its initial value.

  Thus, ${\text{[R]}}_{\text{t}}\text{=}\frac{{\text{[R]}}_{\text{0}}}{\text{2}}.$

In the radioactive decay process the unstable isotopes loses their energy by emitting radiation in order to attain stable species. It is converted in to stable isotopes by emitting positron ${}_{+1}^0\beta$ , gamma ${}_0^0\gamma$ , Beta $\beta$, alpha ${}_2^{4}He$ and or by electron capture ${}_{-1}^{0}e$ .

(b)

Interpretation Introduction

Interpretation:

Half of the atoms is whether more realistic for radioactive decay has to be explained.

Concept Introduction:

Half-life: The time required for the concentration of a reactant to decrease to one half of its initial value.

  Thus, ${\text{[R]}}_{\text{t}}\text{=}\frac{{\text{[R]}}_{\text{0}}}{\text{2}}.$

In the radioactive decay process the unstable isotopes loses their energy by emitting radiation in order to attain stable species. It is converted in to stable isotopes by emitting positron ${}_{+1}^0\beta$ , gamma ${}_0^0\gamma$ , Beta $\beta$, alpha ${}_2^{4}He$ and or by electron capture ${}_{-1}^{0}e$ .