Question

What is the ratio of mass of electron to mass of proton ?

Answer 1

Proton electron mass ratio-
Value- 1836.15267389
Standard-0.00000017
Relative standard uncertainty-9.5*10 to the power -11
Concise form- 1836.15267389(17).

Answer 2

Answer: The ratio of mass of electron to mass of proton comes out to be $5.449\times 10^{-4}$

Explanation:

Protons and electrons are the sub-atomic particles that are present in an atom.

We know that:

Mass of proton = $1.67\times 10^{-27}kilograms$

Mass of electron = $9.10\times 10^{-31}kilograms$

Taking ratio of the mass of electron and mass of proton, we get:

$\frac{M_e}{M_p}=\frac{9.10\times 10^{-31}kg}{1.67\times 10^{-27}kg}\\\\\frac{M_e}{M_p}=5.449\times 10^{-4}$

Hence, the ratio of mass of electron to mass of proton comes out to be $5.449\times 10^{-4}$