Chapter 25.1, Problem 7LC

Interpretation Introduction

Interpretation: To identify the type of radiation that is most penetrating and give the reason behind it.

Concept Introduction: The process which involves the formation of more than one nuclide via a collision between two nuclei or between one nucleus and a subatomic particle, is known as a nuclear reaction.

Answer to Problem 7LC

Gamma radiation is the one that is most penetrating.

Explanation of Solution

Gamma decay: Gamma ray is a high-energy photon that is emitted by a radioisotope. During radioactive decay, neutrons emit gamma rays along with the formation of alpha and beta particles.

The chemical reaction depicting gamma radiation is as follows:

  $\text{T}\text{h}\to \text{R}\text{a}+\text{H}\text{e}+\gamma$

Gamma rays have more penetrating power as they can travel several yards or more in the air and has the ability to penetrate the human body easily. The reason behind the penetrating power of gamma rays is that they have no electrical charge.

Conclusion

Thus, gamma radiation is the one that is most penetrating since they possess no electrical charge.