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Chemistry
Jermaine
10 March, 13:00
The mass number of an element is equal to
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Aniya Haney
10 March, 15:21
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I think Electorn
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Lesly Holland
10 March, 15:35
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We can say that the mass number (A) is the sum of the masses of the particles in an atom, but since the mass of the electron is negligible compared to the masses of protons and neutrons, the mass number is the sum of the masses of protons (Z) and neutrons (n).
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