Which of the following particles are subatomic particles?
1. Electron
2. Proton
3. Neutron
4. Muon
Select the correct answer using the code given below.
Answer
The correct answer is B: 1, 2, 3 and 4. Subatomic particles include all particles smaller than an atom. Electrons, protons and neutrons are the well-known constituents of atoms.
A.1 and 4 only
B.1, 2, 3 and 4✓ Correct
C.2 and 3 only
D.1, 2 and 3 only
Explanation
Subatomic particles include all particles smaller than an atom. Electrons, protons and neutrons are the well-known constituents of atoms. Muons are elementary subatomic particles (leptons) similar to electrons but about 207 times heavier, produced in cosmic ray showers. All four therefore are subatomic particles.
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