Which of the following particles has the least mass? (2020) 2020

Which of the following particles has the least mass? (2020) 2020

Step 1: Understand that particles are tiny building blocks of matter.
Step 2: Identify the three common particles: protons, neutrons, and electrons.
Step 3: Know that protons and neutrons are found in the nucleus of an atom and have similar masses.
Step 4: Learn that electrons are much smaller and lighter than protons and neutrons.
Step 5: Compare the masses: protons and neutrons have a mass of about 1 atomic mass unit (amu), while electrons have a mass of about 1/1836 amu.
Step 6: Conclude that since electrons have a much smaller mass, they are the lightest of the three particles.

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