Question

which statement is true about the relative masses of subatomic particles?
choose 1 answer:
protons have a much larger mass than neutrons.
electrons have a much larger mass than protons.
neutrons have a much larger mass than electrons.

Explanation:

• Protons and neutrons have similar masses. Protons have a mass of approximately \(1.6726\times10^{-27}\text{ kg}\), and neutrons have a mass of approximately \(1.6749\times10^{-27}\text{ kg}\), so option A is incorrect.
• Electrons have a mass of about \(9.1094\times 10^{-31}\text{ kg}\), which is much smaller than the mass of protons (\(1.6726\times10^{-27}\text{ kg}\)), so option B is incorrect.
• Neutrons (\(1.6749\times10^{-27}\text{ kg}\)) have a much larger mass than electrons (\(9.1094\times 10^{-31}\text{ kg}\)) as \(1.6749\times10^{-27}\div9.1094\times 10^{-31}\approx1838\).

Answer:

C. Neutrons have a much larger mass than electrons.