Multiple choice general knowledge science & technology

Which particles have approximately the same size and mass as each other?

  1. neutrons and electrons

  2. electrons and protons

  3. protons and neutrons

  4. none - they are all very different in size and mass
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Protons and neutrons have approximately the same mass (about 1 atomic mass unit each) and similar size. Electrons are much smaller and lighter (about 1/1836 the mass of a proton). This is why they are collectively called nucleons.

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