The mass of an electron is 9.1×10^-31kg and that of a proton is 1.7×10^-27kg. Which one of the following is the difference in the order of magnitude of the masses of the electron and the proton?

The mass of an electron is 9.1×10^-31kg and that of a proton is 1.7×10^-27kg. Which one of the following is the difference in the order of magnitude of the masses of the electron and the proton?



Answer: 3


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