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How big is an electron compared with a proton?

Answer 1

A proton has about 1836 times the mass of an electron.

The mass of an electron is about 1836 times that of a proton; the precise sizes are unknown.

The mass of a proton is 1.0073 u, and the mass of an electron is #5.486 × 10^"-5"color(white)(l) "u"#.

As a result, the mass of a proton is roughly 1836 times that of an electron.

The best estimate that I can find is that the radius of a proton is about #88 × 10^"-16"color(white)(l) "m"# and the radius of an electron is about #2.8 × 10^"-15"color(white)(l) "m"#.

Should they be accurate, the diameter of an electron is approximately three times that of a proton.

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Answer 2

Owen Ambrose

The size of an electron is about 1/1836 times that of a proton, making them substantially smaller than one another.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.