Chapter 8, Problem 28CTQ

Interpretation Introduction

Interpretation: Sign of charge on an electron should be determined.

Concept introduction: An atom is considered to be simplest unit of any matter that makes up an element. It is further composed of 3 subatomic particles:

1. electron

2. protons

3. neutrons.

Atom has a central region where the whole mass is concentrated known as nucleus. Size of atom is ${10}^{-10}\text{m}$ and size of nucleus is ${10}^{-15}\text{m}$ .