Assertion: proton's quark | /r/HasProperty | charge +2/3 e
Facets:
Source sentences:
text: Within the quark model for hadrons, such as the neutron, the proton is composed of one down quark (charge -1/3 e) and two up quarks (charge +2/3 e).
text: In the quark model for hadrons, the neutron is composed of one up quark (charge +2/3 e) and two down quarks (charge −1/3 e).
text: In the quark model for hadrons, the neutron is composed of one up quark (charge +2/3 e) and two down quarks (charge −1/3 e).