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2.7b - approximately the same mass as protons electrons –...

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nucleus  – The central portion of the atom  containing the protons and neutrons.                       protons  – Positively charged particles of 0.16 x  10 -18  C and a mass of 1.66 x 10 -24 g.                         neutrons  –  Neutral particles having 
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Unformatted text preview: approximately the same mass as protons. electrons – Negatively charged particles with a mass of 0.911 x 10-27 g. The charge is the same magnitude as that on the proton. The electrons reside in orbits around the nucleus....
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