The quarks that compose a baryon may have negative and positive charges of +(2/3)e, -(1/3)e.
A quark is a type of particle that forms protons and neutrons and combines to generate particles called hadrons.
Protons and neutrons may be formed by up quarks and down quarks that have a charge equal to -1/3e.
In conclusion, the quarks that compose a baryon may have negative and positive charges of +(2/3)e, -(1/3)e.
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