Which of the following particles has the least mass? (2021) 2021

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Question: Which of the following particles has the least mass? (2021) 2021

Options:

Correct Answer: Electron

Exam Year: 2021

Solution:

The electron has the least mass compared to protons and neutrons.

Which of the following particles has the least mass? (2021) 2021

Which of the following particles has the least mass? (2021) 2021

Step 1: Understand the three particles we are comparing: electrons, protons, and neutrons.
Step 2: Know that protons and neutrons are found in the nucleus of an atom and have a similar mass, which is much larger than that of an electron.
Step 3: Learn that an electron is a subatomic particle that orbits around the nucleus and has a very small mass.
Step 4: Compare the masses: Protons and neutrons each have a mass of about 1 atomic mass unit (amu), while an electron has a mass of about 1/1836 amu.
Step 5: Conclude that since the mass of the electron is much smaller than that of protons and neutrons, the electron has the least mass.

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