Chapter 16.1, Problem 5R

To determine

To Find: the number of times the proton mass is to the mass of the electron.

Explanation of Solution

Introduction:

The proton’s mass is approximately $1.6726\times {10}^{-24}g$ and the mass of the electron is estimated to be $9.1093\times {10}^{-28}g.$

To determine how many times the proton mass is larger than the electron mass, take the ratio of proton mass to electron mass.

  $\frac{\text{Mass of proton}}{\text{ Mass of electron}}=\frac{1.6726\times {10}^{-24}}{9.1093\times {10}^{-28}}$

The ratio is $1836$ . Hence, the proton mass is $1836$ times larger than the electron mass.

Conclusion:

The mass of a proton is $1.6726\times {10}^{-24}g$ , or about $1836$ times the mass of an electron.