How does the mass of a proton compare to the mass of:
an electron

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Solution

Mass of an electron (M_e)= 9.11 ×10^-28 g
Mass of a proton (M_p)= 9.11 ×10^-24 g
$\frac{M_{p}}{M_{e}} = \frac{1.67 \times 10^{- 24} g}{9.11 \times 10^{- 28} g}$
$\frac{M_{p}}{M_{e}} = 1833.15$
Using more exact values, $M_{p} = 1837 M_{e}$
Therefore, mass of a proton is 1837 times heavier than the mass of an electron.

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