Chapter 4.2, Problem 10SSC

Interpretation Introduction

Interpretation: The relative charge and the mass of each of the subatomic particle is to be compared.

Concept introduction: Relative charge is the absolute value of the charge. 1 charge is equivalent to $1.602\times {10}^{-19}$ Coulomb. The mass or atomic mass is the quantity of a matter that is contained in an atom of an element.

Answer to Problem 10SSC

Particle	Relative Charge	Relative Mass
Electron	-1	Negligible
Proton	+1	1
Neutron	0	1

Explanation of Solution

An atom is made up of three subatomic particles: Neutron, Proton and Electron.

Here, a proton is positively charged, an electron is negatively charged and neutron is neutral or there is no charge on it.

The charge of electron and proton is $-1.6\times {10}^{-19}\text{ C}$ and $+1.6\times {10}^{-19}\text{ C}$ respectively. Thus, both have the same magnitude but the sign is opposite.

Similarly, the mass of protons, electron and neutron is $1.67\times {10}^{-27}\text{ kg}$ , $9.11\times {10}^{-31}\text{ kg}$ and $1.67\times {10}^{-27}\text{ kg}$ respectively.

Thus, the relative charge and mass of each of the subatomic particles are given below:

Particle	Relative Charge	Relative Mass
Electron	-1	Negligible.
Proton	+1	1
Neutron	0	1