Chapter 25, Problem 39A

(a)

Interpretation Introduction

Interpretation:

The balanced nuclear reaction is to be determined.

Concept Interpretation:

The process of radioactive decay is how an unstable atomic nucleus loses energy through radiation. A substance that has unstable nuclei is regarded as radioactive.

Answer to Problem 39A

  $\text{C}\to \text{N}\text{+}\text{e}$

Explanation of Solution

The balanced nuclear equation for the decay of carbon $\text{-14}\left(\right)$ where beta radiation is emitted is:

  $\text{C}\to \text{N}\text{+}\text{e}$

where the produced element is nitrogen $\text{-14}\left(\text{N}\right)$

(b)

Interpretation Introduction

Interpretation:

The balanced nuclear reaction is to be determined.

Concept Interpretation:

The process of radioactive decay is how an unstable atomic nucleus loses energy through radiation. A substance that has unstable nuclei is regarded as radioactive.

Answer to Problem 39A

  $\text{S}\text{r}\to \text{Y}\text{+}\text{e}$

Explanation of Solution

The balanced nuclear equation for the decay of strontium $\text{-90}\left(\text{S}\text{r}\right)$ where beta radiation is emitted is:

  $\text{S}\text{r}\to \text{Y}\text{+}\text{e}$

Where the produced element is Yttrium $\text{-90}\left(\text{Y}\right)$

(c)

Interpretation Introduction

Interpretation:

The balanced nuclear reaction is to be determined.

Concept Interpretation The process of radioactive decay is how an unstable atomic nucleus loses energy through radiation. A substance that has unstable nuclei is regarded as radioactive.

Answer to Problem 39A

  $\text{K}\to \text{C}\text{a+}\text{e}$

Explanation of Solution

The balanced nuclear equation for the decay of potassium $\text{-40}\left(\text{K}\right)$ where beta radiation is emitted is:

  $\text{K}\to \text{C}\text{a+}\text{e}$

Where the product element is calcium $\text{-40}\left(\text{C}\text{a}\right)$

(d)

Interpretation Introduction

Interpretation:

The balanced nuclear reaction is to be determined.

Concept Interpretation:

The process of radioactive decay is how an unstable atomic nucleus loses energy through radiation. A substance that has unstable nuclei is regarded as radioactive.

Answer to Problem 39A

  $\text{N}\to \text{O}\text{+}\text{e}$

Explanation of Solution

The balanced nuclear equation for the decay of nitrogen $\text{-13}\left(\text{N}\right)$ where beta radiation is emitted is:

  $\text{N}\to \text{O}\text{+}\text{e}$

Where the product element is oxygen $\text{-13}\left(\text{O}\right)$