Chemistry
Chemistry
12th Edition
ISBN: 9780078021510
Author: Raymond Chang Dr., Kenneth Goldsby Professor
Publisher: McGraw-Hill Education
Question
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Chapter 2, Problem 2.1QP
Interpretation Introduction

Interpretation:

The terms α particle, β particle, γ ray and X ray need to be defined.

Concept introduction:

α particles or α rays are made up of positively charged particles which are deflected away from a positively charged plate.  This is emitted by radioactive substances.

β particles or β rays are made up of electrons which are deflected away from a negatively charged plate.  This is emitted by radioactive substances.

γ rays are of high energy.  They have no charge.  Therefore, they are unaffected by external magnetic or electric field.  This is emitted by radioactive substances.

X rays are produced when cathode rays are pointed towards glass or metal.  X rays have high energy to penetrate matter.  X rays are not deflected by electric or magnetic fields, which tells that X rays do not have charged particles.

Expert Solution & Answer
Check Mark

Answer to Problem 2.1QP

α Particles or α rays are made up of positively charged particles which are deflected away from a positively charged plate.

β particles or β rays are made up of electrons which are deflected away from a negatively charged plate.

γ rays are of high energy.  They have no charge.

X rays are produced when cathode rays are pointed towards glass or metal.  X rays have high energy to penetrate matter. 

Explanation of Solution

α particles

Radioactivity is the spontaneous emission of radiation by a substance.  When substances like uranium produces radiation, there are of three types present in it.  α particles or α rays are made up of positively charged particles which are deflected away from a positively charged plate.  α particles or α rays consist of two protons and two neutrons similar to helium nucleus.

β particles

Radioactivity is the spontaneous emission of radiation by a substance.  When substances like uranium produces radiation, there are of three types present in it.  β particles or β rays are made up of electrons which are deflected away from a negatively charged plate.  This is emitted by radioactive substances.  This is a high energy electron or positron.

γ rays

Radioactivity is the spontaneous emission of radiation by a substance.  When substances like uranium produces radiation, there are of three types present in it.  γ rays are of high energy.  They have no charge.  Therefore, they are unaffected by external magnetic or electric field.  This is emitted by radioactive substances.  It consists of photons.  They ionize atoms.  Thus, they are biologically hazardous.

X rays

X rays are produced when cathode rays are pointed towards glass or metal.  X rays have high energy to penetrate matter.  X rays are not deflected by electric or magnetic fields, which tells that X rays do not have charged particles. X-ray cannot penetrate bone.  Therefore, this can be used to check breaks or fractures in bones.  X-rays are used to identify tumors also.

Conclusion

The given terms are defined.

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Chapter 2 Solutions

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