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Chemistry, 19.01.2020 12:31 daquanmcqueen77

The mass of an atom is found by adding its protons and (space) the electric charge of an atom is found by adding the charges carried by its protons and (space)

(first space)
1.electrons
2.neutrons
3.nucleus
(second space)
1.electrons
2.neutrons
3.nucleus

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