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01216_Electronic Structure (P1).txt
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1995-12-08
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329 b
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8 lines
Which of the following is the heaviest particle?
A. Proton
B. Neutron
C. Electron
D. The lighter of the nucleons
B
Nucleons include the protons and neutrons of an atom. Answer D is therefore equivalent to answer A. Electrons have negligible mass when compared with the nucleons. Neutrons are slightly heavier than protons.