Final answer:
Protons have a positive charge, while neutrons have no charge.
Step-by-step explanation:
Protons and neutrons have approximately the same mass, about 1.67 × 10-²4 grams. Scientists arbitrarily define this amount of mass as one atomic mass unit (amu) or one Dalton.
The main difference between protons and neutrons is their electric charge. A proton is positively charged (+1), while a neutron has no charge (0).
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