proton的weight是...
The weight of 1 proton is 1.67 yoctograms. That is ...
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almost the same as hydrogen atom (1.0 to be exact).
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1,835 times bigger than electronic .
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463,888,889 times bigger than electronic neutrino .
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17 times smaller than oxygen atom .
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50 times smaller than titanium atom .
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66 times smaller than copper atom .
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863 times smaller than uranium atom .
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601,801,405 times smaller than influenza virus .
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958,376,934,608 times smaller than escherichia coli .
