Which of the following statements about subatomic particles is true?

• A. Neutrons are found only outside the nucleus of an atom.
• B. Protons and neutrons have approximately the same mass, but electrons are much less massive.
• C. Electrons have a positive charge, while protons and neutrons are neutral.
• D. Protons and electrons have identical masses.

Answer: (B)

Verified step by step guidance

1. Recall the basic properties of subatomic particles: protons, neutrons, and electrons.
2. Understand the location of each particle: protons and neutrons are located in the nucleus, while electrons are found outside the nucleus.
3. Compare the masses of the particles: protons and neutrons have similar masses, which are much greater than the mass of an electron.
4. Review the charges of the particles: protons have a positive charge, electrons have a negative charge, and neutrons are neutral.
5. Use this information to evaluate each statement and identify the one that correctly describes the properties of subatomic particles.