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An atom of helium has a radius of 31. pm and the average orbital speed of the electrons in it is about 4.4x 10 m/s calculate the least possible uncertainty in a measurement of the speed of an electron in an atom of helium. write your answer as a percentage of the average speed, and round it to 2 significant digits x 10
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An atom of helium has a radius of 31. pm and the average orbital speed of the electrons in it is abo...
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