Chapter 25, Problem 37A

Interpretation Introduction

Interpretation: Symbol and charge of Alpha particles, Beta particles, Gamma rays are to be written.

Concept Introduction: An unstable atom tries to gain stability during radioactivity, particles like Alpha, Beta, and Gamma rays are emitted by an atom.

Answer to Problem 37A

Symbol and charge of Alpha particle, Beta particle, Gamma rays are as follows:

	Symbol	Charge
Alpha Particle	a	+2
Beta Particle	ß	-1
Gamma Ray	?	0

Explanation of Solution

Given Information: Names of three types of radiations emitted by radioactive particles.

Positively charged particles are known as Alpha particles. When two protons and two neutrons are bound together, they form Alpha particles. As there are no electrons to balance the positive charge of two protons, an Alpha particle has a +2 charge and is the same as a Helium nucleus.

Negatively charged particles are known as Beta particles. Electron with high energy forms Beta particles.

Particles with no charge (neutral) are known as Gamma ray. They are photons, which are electromagnetic energy waves.

Conclusion

Alpha particles have the symbol a with a +2 charge.

Beta particles have the symbol ß with a -1 charge.

Gamma rays have the symbol ? with 0 charge.