Chapter 2, Problem 2QRT

(a)

Interpretation Introduction

Interpretation:

How much heavier a proton is than an electron has to be calculated.

Concept Introduction:

Electrons:

Electrons are constituents of atom and it is the negatively charged subatomic particle.  It is known as the elementary particle because it cannot be broken down into smaller particles.

Charge of the electron $\text{=-1}{\text{.6×10}}^{\text{-19}}\text{ C}$.

Mass of the electron $\text{= 9}{\text{.1×10}}^{\text{-28}}\text{ g}$.

Protons:

Hydrogen atoms had the smallest mass to charge ratios, indicating that they must be the positively charged fundamental particles of atomic structure.  Such a particle is called a proton.

Charge of the proton $\text{=1}{\text{.6×10}}^{\text{-19}}\text{ C}$.

Mass of the proton $\text{= 1}{\text{.67 × 10}}^{\text{-24}}\text{ g}$.

(b)

Interpretation Introduction

Interpretation:

The difference between charge of a proton and an electron has to be determined.

Concept Introduction:

Refer to part (a)