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An electron has a much smaller mass than any atom.

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15y ago

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Which has the smallest mass?

Hydrogen has the smallest atomic mass at roughly 1.008 grams per mol (6.02x10^23 atoms)


Which subatomic particle has the smallest mass alpha particle neutron electron proton?

among these Electron has the least mass....


What the smallest particle in a atom?

Size on the scale of atoms is very hard to define. The electron has zero mass. Quarks have varying amounts of mass.


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