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  4. What is the ratio of mass of an electron to the mass of a proton?

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Q. What is the ratio of mass of an electron to the mass of a proton?

Structure of Atom

Solution:

Electron $\frac{1}{1837}$time lighter than proton so their mass ratio will be $1 : 1837.$
rati $= \frac{1.67 \times10^{-27}}{9.1\times10^{-31}}=1837$