Chapter 18, Problem 59AE

(a)

Interpretation Introduction

Interpretation: The stability of the given nuclide is to be predicted.  The type of radioactivity of the unstable nuclide is to be stated.

Concept introduction: The nuclides having the neutron to proton ratio close to $1$ are the stable nuclide.  Nuclides, having the neutron to proton ratio greater or lesser than $1$, are unstable.  They become stable by the emission of particles.

To determine: The stability of the ${}_{19}^{45}\text{K}$ nuclides and type of radioactivity.

(b)

Interpretation Introduction

Interpretation: The stability of the given nuclide is to be predicted.  The type of radioactivity of the unstable nuclide is to be stated.

Concept introduction: The nuclides having the neutron to proton ratio close to $1$ are the stable nuclide.  Nuclides, having the neutron to proton ratio greater or lesser than $1$, are unstable.  They become stable by the emission of particles.

To determine: The stability of the ${}_{26}^{56}\text{Fe}$ nuclides and type of radioactivity.

(c)

Interpretation Introduction

Interpretation: The stability of the given nuclide is to be predicted.  The type of radioactivity of the unstable nuclide is to be stated.

Concept introduction: The nuclides having the neutron to proton ratio close to $1$ are the stable nuclide.  Nuclides, having the neutron to proton ratio greater or lesser than $1$, are unstable.  They become stable by the emission of particles.

To determine: The stability of the ${}_{11}^{20}\text{Na}$ nuclides and type of radioactivity.

(d)

Interpretation Introduction

Interpretation: The stability of the given nuclide is to be predicted.  The type of radioactivity of the unstable nuclide is to be stated.

Concept introduction: The nuclides having the neutron to proton ratio close to $1$ are the stable nuclide.  Nuclides, having the neutron to proton ratio greater or lesser than $1$, are unstable.  They become stable by the emission of particles.

To determine: The stability of the ${}_{\text{81}}^{\text{194}}\text{Tl}$ nuclides and type of radioactivity.