13.Which of the particles have approximately the same size and mass as each other?
A. Protons and neutrons C. Neutrons and electrons
B. Electrons and protons D. All subatomic particles have different mass and size
A. Protons and neutrons C. Neutrons and electrons
B. Electrons and protons D. All subatomic particles have different mass and size
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Answer:
A. Protons and neutrons
Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams. Scientists define this amount of mass as one atomic mass unit (amu) or one Dalton. Although similar in mass, protons are positively charged, while neutrons have no charge.
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