Chapter 25, Problem 70A

Interpretation Introduction

Interpretation:

Similarities and differences between positrons and electrons are to be described.

Concept introduction:

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 70A

A positron has the same magnetic moment as an electron, but it is a much heavier and slower particle.

Explanation of Solution

Similarities

Positron	Electron
Positron are the beta $\text{β}$ particles.	Electrons are the beta $\text{β}$ particles.
It has a spin of 1/2	It has a spin of 1/2
It is a form of radioactive decay.	Electron is a form of radioactive decay.
Positrons do not change the atomic number or mass number of an atom.	Electron do not change the atomic number or mass number of an atom.

Difference

Positron	Electron
Positron is heavier.	Electron is lighter.
Positron is positively charged.	Electron is negatively charged.
Positron is an antielectron or the antimatter counterpart of the electron.	Electron is an elementary particle of an atom.